1 00:00:00,000 --> 00:00:04,500 Attention viewers, do not try anything you're about to see at home. 2 00:00:04,500 --> 00:00:07,000 Wear what you call experts. 3 00:00:07,000 --> 00:00:16,500 On this episode of Mythbusters, Adam and Jamie go on a grime wave with two frightfully filthy fables. 4 00:00:16,500 --> 00:00:18,000 That is nasty. 5 00:00:18,000 --> 00:00:20,000 First, they call in the rat pack. 6 00:00:20,000 --> 00:00:22,000 I see some rat urine on a can. 7 00:00:22,000 --> 00:00:26,500 For the terrible tale that rat pee on a pop can can kill. 8 00:00:26,500 --> 00:00:28,500 Oh, this one is so gross. 9 00:00:28,500 --> 00:00:33,000 Then they test the myth that everyday items are dirtier than your toilet seat. 10 00:00:33,000 --> 00:00:37,500 Mary had a little lamb. Its fleece was white as snow. 11 00:00:37,500 --> 00:00:41,000 Meanwhile, Jesse Torrey and Grant cut to the chase. 12 00:00:41,000 --> 00:00:43,000 Why'd you stop? We're supposed to skip it. 13 00:00:43,000 --> 00:00:46,000 As they find out if a souped-up supercar... 14 00:00:46,000 --> 00:00:48,000 Oh! That's a fast car. 15 00:00:48,000 --> 00:00:52,000 ...can bounce across the surface of a lake like a skipping stone. 16 00:00:52,000 --> 00:00:54,000 We're like Delmar and Louise. 17 00:00:59,500 --> 00:01:02,000 Who are the Mythbusters? 18 00:01:02,000 --> 00:01:04,000 Adam Savage 19 00:01:04,000 --> 00:01:06,000 and Jamie Heineman. 20 00:01:06,000 --> 00:01:08,000 Relax. This one hurt a bit. 21 00:01:08,000 --> 00:01:12,000 Between them more than 30 years of special effects experience, 22 00:01:12,000 --> 00:01:14,000 joining them, 23 00:01:14,000 --> 00:01:16,000 Torrey Velaychee 24 00:01:16,000 --> 00:01:19,000 and Grant Imahara. 25 00:01:19,000 --> 00:01:20,000 We're good to go. 26 00:01:20,000 --> 00:01:21,000 Carrie Byron 27 00:01:21,000 --> 00:01:22,000 It's terrifying. 28 00:01:22,000 --> 00:01:24,000 And featuring Jesse Combs. 29 00:01:24,000 --> 00:01:27,000 This is going to be so rad. 30 00:01:27,000 --> 00:01:29,000 They don't just tell the myth. 31 00:01:30,000 --> 00:01:32,500 They put them to the test. 32 00:01:47,500 --> 00:01:49,000 What do you got there? 33 00:01:49,000 --> 00:01:51,500 A story about very small things? 34 00:01:51,500 --> 00:01:53,000 Yep. 35 00:01:53,000 --> 00:01:55,500 We're talking about millions of tiny organisms 36 00:01:55,500 --> 00:01:58,000 that you come into contact with every day. 37 00:01:58,000 --> 00:02:00,500 Some of them could have a nasty surprise waiting for you 38 00:02:00,500 --> 00:02:02,500 and be really harmful. 39 00:02:02,500 --> 00:02:04,000 I got one that fits that, Bill. 40 00:02:04,000 --> 00:02:06,000 I got a chain letter recently 41 00:02:06,000 --> 00:02:08,500 that stated a woman had died 42 00:02:08,500 --> 00:02:11,500 from a deadly pathogen she contracted 43 00:02:11,500 --> 00:02:13,500 drinking from a soda can 44 00:02:13,500 --> 00:02:16,000 tainted with rat urine. 45 00:02:16,000 --> 00:02:18,000 That's exactly what I'm talking about. 46 00:02:18,000 --> 00:02:19,500 Well, let's get to it. 47 00:02:19,500 --> 00:02:20,500 Okay. 48 00:02:20,500 --> 00:02:22,500 Wherever there are rats, 49 00:02:22,500 --> 00:02:24,000 filth follows. 50 00:02:24,000 --> 00:02:28,000 But are soda cans really contaminated by rat pee? 51 00:02:28,000 --> 00:02:29,500 And if they are, 52 00:02:29,500 --> 00:02:33,000 could drinking directly from the can be deadly? 53 00:02:34,000 --> 00:02:35,500 So how do you want to test this? 54 00:02:35,500 --> 00:02:38,000 Well, you know this myth is so pervasive, 55 00:02:38,000 --> 00:02:39,500 we need to get it right. 56 00:02:39,500 --> 00:02:42,500 And that means we need to have a nice, large sample size. 57 00:02:42,500 --> 00:02:43,500 Okay. 58 00:02:43,500 --> 00:02:47,000 And I think we should start with a positive pee control 59 00:02:47,000 --> 00:02:48,500 so that we know what rat urine looks like, 60 00:02:48,500 --> 00:02:50,000 we know how to test for it, 61 00:02:50,000 --> 00:02:52,500 we know how to know when it's there. 62 00:02:52,500 --> 00:02:56,500 And we need to just get a whole parcel of rats, 63 00:02:56,500 --> 00:02:59,500 a bunch of cans, and let nature take its course, huh? 64 00:02:59,500 --> 00:03:01,500 Is PASL the collective noun for rats? 65 00:03:01,500 --> 00:03:03,500 I don't know. 66 00:03:03,500 --> 00:03:06,500 Well, actually it's a horde, swarm, 67 00:03:06,500 --> 00:03:08,500 rabble, or pack of rats. 68 00:03:08,500 --> 00:03:10,500 But before they get started, 69 00:03:10,500 --> 00:03:12,500 but I don't understand, how is it possible 70 00:03:12,500 --> 00:03:14,500 that rat pee could kill you? 71 00:03:14,500 --> 00:03:17,500 Yes, it's not rat pee itself that could kill you. 72 00:03:17,500 --> 00:03:20,000 It's the fact that rat pee could potentially carry 73 00:03:20,000 --> 00:03:22,000 both leptosporosis and hand virus 74 00:03:22,000 --> 00:03:25,000 that makes it potentially dangerous. 75 00:03:25,000 --> 00:03:26,000 I see. 76 00:03:26,000 --> 00:03:28,000 According to this myth, 77 00:03:28,000 --> 00:03:32,000 deadly pathogens transfer from rat through rat urine 78 00:03:32,000 --> 00:03:35,000 to soda can, and from there, to people. 79 00:03:35,000 --> 00:03:38,000 So first, they're starting with a positive control. 80 00:03:38,000 --> 00:03:40,500 Now normally we certify our tasty, tasty 81 00:03:40,500 --> 00:03:43,000 MythBusters Cola as both a life extending elixir 82 00:03:43,000 --> 00:03:47,000 and rat pee free, until today. 83 00:03:47,000 --> 00:03:49,500 Today a thousand of these puppies are going to be set up 84 00:03:49,500 --> 00:03:52,500 as a rat run to be used as what we like to call 85 00:03:52,500 --> 00:03:55,000 a control for exposure to rat pee. 86 00:03:55,000 --> 00:03:58,500 Adam Janney will hone their rat pee tracking technique 87 00:03:58,500 --> 00:04:02,500 before moving on to test real world soda cans. 88 00:04:02,500 --> 00:04:04,500 So why go to all this trouble to clean the cans 89 00:04:04,500 --> 00:04:06,500 just to have rats pee on them? 90 00:04:06,500 --> 00:04:09,500 Well, it's because all we want to find is rat pee, 91 00:04:09,500 --> 00:04:11,500 not random dirt or other false positives 92 00:04:11,500 --> 00:04:13,500 that may be introduced into our test. 93 00:04:13,500 --> 00:04:16,500 So, we scrub every single one. 94 00:04:16,500 --> 00:04:19,000 And I gotta say, looking at a thousand cans, 95 00:04:19,000 --> 00:04:21,000 there's a lot of dirt to be cleaned up. 96 00:04:21,000 --> 00:04:23,000 Now that the cans are pristine, 97 00:04:23,000 --> 00:04:26,000 let the rodent incontinence begin. 98 00:04:26,000 --> 00:04:28,000 Oh, I see some rat urine on a can. 99 00:04:28,000 --> 00:04:29,000 Nice! 100 00:04:29,000 --> 00:04:30,000 This is awesome. 101 00:04:30,000 --> 00:04:34,000 This is one of those sounds that you'll only hear on MythBusters. 102 00:04:34,000 --> 00:04:37,000 Sound of 40 rats on a thousand cans. 103 00:04:41,000 --> 00:04:46,000 And after 90 minutes of the pitter-patter of ratty feet, 104 00:04:46,000 --> 00:04:48,500 the rat party is wrapped. 105 00:04:48,500 --> 00:04:50,500 Let's put it back in their cages. 106 00:04:50,500 --> 00:04:53,500 There's certainly rat pee on those cans. 107 00:04:53,500 --> 00:04:56,500 And the first tracking technique, black light. 108 00:04:56,500 --> 00:04:59,500 Did you know that rat pee fluoresces under black light? 109 00:04:59,500 --> 00:05:01,500 That's the next thing we're going to do. 110 00:05:01,500 --> 00:05:04,500 We're going to get some black lights and go take a look for them. 111 00:05:04,500 --> 00:05:08,500 I feel like I'm one of those police procedural drundas. 112 00:05:08,500 --> 00:05:11,500 And with plenty of glowing puddles, 113 00:05:11,500 --> 00:05:12,500 It's got to be urine. 114 00:05:12,500 --> 00:05:14,500 Lights up like a pinball machine. 115 00:05:14,500 --> 00:05:17,000 Oh, this one is so gross. Look at that. 116 00:05:19,000 --> 00:05:25,000 The boys are positive that the black light is the perfect way to pinpoint the pee. 117 00:05:25,000 --> 00:05:26,000 Well, that's gross. 118 00:05:26,000 --> 00:05:30,000 I guess it's time to collect our real-world random samples now. 119 00:05:30,000 --> 00:05:31,000 Well, we better get started. 120 00:05:31,000 --> 00:05:34,000 We've got a thousand cans to collect from all over the city. 121 00:05:34,000 --> 00:05:35,000 A thousand? 122 00:05:35,000 --> 00:05:37,000 Okay, let's do it. 123 00:05:37,000 --> 00:05:40,000 With their identification method lighting up the pee, 124 00:05:40,000 --> 00:05:41,000 the main test begins. 125 00:05:41,000 --> 00:05:45,000 As the guys collect one thousand cans from a variety of sources. 126 00:05:45,000 --> 00:05:46,000 Perfect. 127 00:05:46,000 --> 00:05:48,000 And a variety of storage conditions. 128 00:05:48,000 --> 00:05:52,000 Some upmarket, some not so much. 129 00:05:52,000 --> 00:05:53,000 All set? 130 00:05:59,000 --> 00:06:01,000 Check this out, man. 131 00:06:01,000 --> 00:06:05,000 First can, I see little fluorescing spotty spots. 132 00:06:05,000 --> 00:06:06,000 That's a good sign. 133 00:06:06,000 --> 00:06:07,000 I'm going to put that in the... 134 00:06:07,000 --> 00:06:08,000 No, it's a bad sign. 135 00:06:08,000 --> 00:06:09,000 I'm going to put it in the... 136 00:06:09,000 --> 00:06:11,000 For further research category. 137 00:06:11,000 --> 00:06:14,000 A sign that gets worse with every can. 138 00:06:14,000 --> 00:06:15,000 Spots. 139 00:06:15,000 --> 00:06:17,000 Oh, yeah, spots. 140 00:06:17,000 --> 00:06:19,000 The whole world is contaminated. 141 00:06:21,000 --> 00:06:22,000 Spots. 142 00:06:22,000 --> 00:06:24,000 What are we going to do, dude? 143 00:06:24,000 --> 00:06:27,000 I mean, these can be all contaminated. 144 00:06:27,000 --> 00:06:28,000 Can they? 145 00:06:32,000 --> 00:06:36,000 Next, a myth that's sink or skin. 146 00:06:39,000 --> 00:06:42,000 Well, you guys may have figured out by now that, well, me and Kars, 147 00:06:42,000 --> 00:06:44,000 we kind of have this thing, and there's a myth on the fan site 148 00:06:44,000 --> 00:06:45,000 that I really want to test out. 149 00:06:45,000 --> 00:06:46,000 All right, what is it? 150 00:06:46,000 --> 00:06:48,000 Are you familiar with the cannonball films? 151 00:06:48,000 --> 00:06:49,000 Yeah, from the 80s, right? 152 00:06:49,000 --> 00:06:52,000 Okay, so it's the third installment that our myth comes from. 153 00:06:52,000 --> 00:06:54,000 The beginning of the movie, there's a red-layer burgundy 154 00:06:54,000 --> 00:06:55,000 that is trying to evade the cops. 155 00:06:55,000 --> 00:06:58,000 Well, there's a lot of speeding and a lot of weaving and trickery, 156 00:06:58,000 --> 00:07:01,000 but man, the cops are not going to accept a fee. 157 00:07:01,000 --> 00:07:03,000 So what the sports car driver does is he drives off the road 158 00:07:03,000 --> 00:07:05,000 and heads straight towards the lake. 159 00:07:05,000 --> 00:07:07,000 He totally floors it, skips across the water, 160 00:07:07,000 --> 00:07:09,000 makes it to the other side, and gets away from the cops. 161 00:07:09,000 --> 00:07:10,000 Exactly. 162 00:07:10,000 --> 00:07:11,000 I love it. 163 00:07:11,000 --> 00:07:14,000 Fast cars skipping across the water, you should come here more often. 164 00:07:17,000 --> 00:07:21,000 To flee the forest, a speedy sports car skips the lake fantastic. 165 00:07:21,000 --> 00:07:26,000 But is this filmic fantasy or stone-cold fact? 166 00:07:26,000 --> 00:07:31,000 Could a 1.2-ton car really skim upon like a skipping stone? 167 00:07:32,000 --> 00:07:33,000 So what's the plan? 168 00:07:33,000 --> 00:07:36,000 I have watched the scene over and over in slow motion. 169 00:07:36,000 --> 00:07:38,000 And what I have found that watching frame by frame 170 00:07:38,000 --> 00:07:41,000 and measuring points of reference, the car wasn't going very fast. 171 00:07:41,000 --> 00:07:44,000 Maybe 50 miles an hour, it went off a little launch 172 00:07:44,000 --> 00:07:48,000 and skipped about four times over a 100-foot body of water. 173 00:07:48,000 --> 00:07:49,000 Okay, sounds easy enough. 174 00:07:49,000 --> 00:07:52,000 We get a Lamborghini, drive it at 50 miles an hour, 175 00:07:52,000 --> 00:07:55,000 and see if it can skip across 100 feet of water. 176 00:07:55,000 --> 00:07:58,000 Who is going to let us borrow their $250,000 car 177 00:07:58,000 --> 00:08:00,000 and drive into a lake to test this? 178 00:08:00,000 --> 00:08:01,000 I mean, it's not going to happen. 179 00:08:01,000 --> 00:08:03,000 This isn't going to be easy. 180 00:08:03,000 --> 00:08:04,000 No, it's not. 181 00:08:04,000 --> 00:08:07,000 But although you can't always get what you want, 182 00:08:07,000 --> 00:08:09,000 sometimes you get what you need. 183 00:08:11,000 --> 00:08:13,000 What in the heck did she get that for? 184 00:08:13,000 --> 00:08:15,000 That doesn't look like a Lamborghini. 185 00:08:15,000 --> 00:08:16,000 Yeah, far from it. 186 00:08:16,000 --> 00:08:20,000 Super car it ain't, but it's still a perfect stunt stand-in. 187 00:08:20,000 --> 00:08:25,000 On price tag and top speed, the luxury car has ours beat. 188 00:08:25,000 --> 00:08:28,000 But for this myth, what's key is that the surface area, 189 00:08:28,000 --> 00:08:32,000 weight and weight distribution are almost identical. 190 00:08:32,000 --> 00:08:36,000 But because nobody is volunteering to drive into a lake, 191 00:08:36,000 --> 00:08:39,000 our resident control geek gets to work. 192 00:08:39,000 --> 00:08:40,000 I got a plan. 193 00:08:40,000 --> 00:08:41,000 I got a plan. 194 00:08:41,000 --> 00:08:44,000 With Grant's remote control under control, 195 00:08:44,000 --> 00:08:46,000 Tari's talking tracks. 196 00:08:46,000 --> 00:08:49,000 Now for this myth, as well as the car, we need two things. 197 00:08:49,000 --> 00:08:52,000 One, we need a long straight road that we can get this car up 198 00:08:52,000 --> 00:08:54,000 to some pretty high speeds. 199 00:08:54,000 --> 00:08:58,000 And two, at the end of that road, we need a 100-foot pond 200 00:08:58,000 --> 00:08:59,000 for this car to try to skip across. 201 00:08:59,000 --> 00:09:01,000 Now, we've looked all over San Francisco. 202 00:09:01,000 --> 00:09:05,000 We've looked all over California, and we have come up with nothing, 203 00:09:05,000 --> 00:09:07,000 which means only one thing. 204 00:09:07,000 --> 00:09:09,000 Road trip, baby. 205 00:09:09,000 --> 00:09:11,000 Wouldn't it have been easier if we could fly? 206 00:09:11,000 --> 00:09:14,000 With local lakes few and far between, 207 00:09:14,000 --> 00:09:17,000 the team hits the road to a familiar location. 208 00:09:19,000 --> 00:09:22,000 The last time the team visited the test track of Freightliner, 209 00:09:22,000 --> 00:09:25,000 they put some big rig myths to the test. 210 00:09:25,000 --> 00:09:29,000 With open space and miles of track weight, 211 00:09:29,000 --> 00:09:32,000 it was the perfect place to put their lives on the line. 212 00:09:35,000 --> 00:09:39,000 And this time, they've added a crucial addition to the end of the track, 213 00:09:39,000 --> 00:09:41,000 a giant, purpose-built pond. 214 00:09:41,000 --> 00:09:44,000 Ideal for a sports car to skip. 215 00:09:44,000 --> 00:09:45,000 Only not this one. 216 00:09:45,000 --> 00:09:47,000 This is just for show. 217 00:09:48,000 --> 00:09:49,000 Why'd you stop? 218 00:09:49,000 --> 00:09:51,000 We're supposed to skip it. 219 00:09:51,000 --> 00:09:53,000 Yeah, but that's why we have make-and-believe Lamborghinis. 220 00:09:53,000 --> 00:09:55,000 Where did you get that car? 221 00:09:55,000 --> 00:09:57,000 Well, a good friend let me buy it. 222 00:09:57,000 --> 00:09:59,000 What do you think about our pond? 223 00:09:59,000 --> 00:10:00,000 This is a gorgeous pond. 224 00:10:00,000 --> 00:10:02,000 This is a little bit bigger than I thought it was going to be. 225 00:10:02,000 --> 00:10:04,000 Yeah, we made it to the same dimensions as in the movie. 226 00:10:04,000 --> 00:10:07,000 100 feet long, 27 feet wide, and 3 feet deep. 227 00:10:07,000 --> 00:10:09,000 Yep, with a perfect pond to skim, 228 00:10:09,000 --> 00:10:12,000 Tori and Jesse break out the heavy machinery. 229 00:10:12,000 --> 00:10:16,000 All right, so now what we're doing here is we are building a little ramp 230 00:10:16,000 --> 00:10:18,000 before we actually hit the water. 231 00:10:18,000 --> 00:10:20,000 Why? Because that's what they had in the movie. 232 00:10:20,000 --> 00:10:22,000 We can look at as close as we possibly can, 233 00:10:22,000 --> 00:10:26,000 and that Lamborghini had a little bit of lift before it went across the water. 234 00:10:26,000 --> 00:10:30,000 And a little lift that equates to a movie matching 8-inch mount. 235 00:10:30,000 --> 00:10:34,000 With that time lapsed into place, Jesse casts the first stone. 236 00:10:34,000 --> 00:10:38,000 Now this whole myth is about skipping a car across the water like a stone. 237 00:10:38,000 --> 00:10:40,000 I'm sure you've all tried it before. 238 00:10:40,000 --> 00:10:42,000 If you get a smooth enough stone and you fling it just right, 239 00:10:42,000 --> 00:10:45,000 it'll actually bounce across the water's surface. 240 00:10:46,000 --> 00:10:47,000 But why? 241 00:10:47,000 --> 00:10:49,000 Well, it's all about spin and speed. 242 00:10:49,000 --> 00:10:53,000 The spin on the stone stabilizes it and stops it from simply falling into the water. 243 00:10:53,000 --> 00:10:55,000 If the stone is traveling at a fast enough speed, 244 00:10:55,000 --> 00:10:59,000 then each time it hits the water's surface and pushes some of the water downwards, 245 00:10:59,000 --> 00:11:01,000 the stone is forced upwards. 246 00:11:01,000 --> 00:11:06,000 So the stone continues to skip along the surface until eventually it runs out of speed and sinks. 247 00:11:06,000 --> 00:11:12,000 So if skimming is all down to spin and speed with a car that isn't revolving, skip. 248 00:11:12,000 --> 00:11:15,000 There's something that doesn't look quite right with this car. 249 00:11:15,000 --> 00:11:17,000 It doesn't look fast enough. 250 00:11:17,000 --> 00:11:22,000 That's a fast car. 251 00:11:22,000 --> 00:11:26,000 We are ready to find out if this car is going to skip. 252 00:11:26,000 --> 00:11:28,000 Is it going to work? 253 00:11:28,000 --> 00:11:29,000 Probably not. 254 00:11:29,000 --> 00:11:33,000 What I think is going to happen is it might skip once? 255 00:11:33,000 --> 00:11:34,000 Maybe probably not. 256 00:11:34,000 --> 00:11:35,000 Probably not. 257 00:11:35,000 --> 00:11:37,000 It's not going to make it to the end, either way. 258 00:11:37,000 --> 00:11:39,000 Well, all is about to be revealed. 259 00:11:39,000 --> 00:11:44,000 As Jesse heads to her vantage point, a clearly excited Grant starts the engines. 260 00:11:44,000 --> 00:11:45,000 The car is armed. 261 00:11:45,000 --> 00:11:46,000 This is it, you guys. 262 00:11:46,000 --> 00:11:48,000 And Tori gives the countdown. 263 00:11:48,000 --> 00:11:51,000 The car skipped just like in the movie. 264 00:11:51,000 --> 00:11:52,000 Here we go. 265 00:11:52,000 --> 00:11:56,000 In three, two, one, hit it. 266 00:11:56,000 --> 00:12:03,000 Next, Adam and Jamie get to the bottom of the Rat P puzzle. 267 00:12:03,000 --> 00:12:08,000 Oh, it's like a concentrated pet store. 268 00:12:08,000 --> 00:12:10,000 That's what that smells like. 269 00:12:10,000 --> 00:12:11,000 Dirty rats. 270 00:12:11,000 --> 00:12:12,000 They're everywhere. 271 00:12:12,000 --> 00:12:18,000 But are these crafty rodents leaving disease-ridden calling cards on soda cans? 272 00:12:18,000 --> 00:12:23,000 Well, after examining a thousand cans from all over San Francisco, 273 00:12:23,000 --> 00:12:26,000 Adam and Jamie are working. 274 00:12:26,000 --> 00:12:29,000 So, we're going to have to find out what's going on. 275 00:12:29,000 --> 00:12:31,000 We're going to have to find out what's going on. 276 00:12:31,000 --> 00:12:33,000 We're going to have to find out what's going on. 277 00:12:33,000 --> 00:12:35,000 We're going to have to find out what's going on. 278 00:12:35,000 --> 00:12:37,000 We're going to have to find out what's going on. 279 00:12:37,000 --> 00:12:38,000 And this is my appetite. 280 00:12:38,000 --> 00:12:40,000 Adam and Jamie are working. 281 00:12:40,000 --> 00:12:42,000 So, where does this leave us? 282 00:12:42,000 --> 00:12:45,000 Am I lying on a mountain of Rat P infested cans? 283 00:12:45,000 --> 00:12:48,000 Are we going to need to add it as an ingredient on every soda can, 284 00:12:48,000 --> 00:12:53,000 or did we just happen to see a bunch of other run-of-the-mill things 285 00:12:53,000 --> 00:12:55,000 that happen to fluoresce under black light? 286 00:12:55,000 --> 00:12:59,000 Well, the only way we're going to know is by taking testing to another level. 287 00:12:59,000 --> 00:13:03,000 Clearly, we need to swab the top of our sample and take it to a lab 288 00:13:03,000 --> 00:13:05,000 and find out what's on top of them for sure. 289 00:13:05,000 --> 00:13:09,000 First up is the Rat P positive 1000 can control. 290 00:13:09,000 --> 00:13:11,000 I'll tell you one thing. 291 00:13:11,000 --> 00:13:14,000 I am never letting my rats play on my soda cans again. 292 00:13:14,000 --> 00:13:16,000 The things you learn on this show. 293 00:13:16,000 --> 00:13:19,000 Using a sterile swab dipped in sterile water, 294 00:13:19,000 --> 00:13:23,000 each can is swabbed and then a vacuum extracts the sample. 295 00:13:23,000 --> 00:13:27,000 I got to tell you, this may be boring and it may be painful, 296 00:13:27,000 --> 00:13:29,000 but it's also really cool. 297 00:13:29,000 --> 00:13:32,000 Yeah, this is so much fun I can hardly stand it. 298 00:13:35,000 --> 00:13:40,000 Oh, it's like a concentrated pet store. 299 00:13:40,000 --> 00:13:42,000 That's what that smells like. 300 00:13:42,000 --> 00:13:48,000 The lab should show that their positive control is brimming with rat pee, 301 00:13:48,000 --> 00:13:52,000 but will the random cans also have rodent remains? 302 00:13:52,000 --> 00:13:54,000 Or did the black light get it wrong? 303 00:13:54,000 --> 00:13:58,000 You got to try the one-handed bag opening can flip I got going on over here, Jamie. 304 00:13:58,000 --> 00:14:00,000 It's really saved me time. 305 00:14:02,000 --> 00:14:04,000 I can see that. 306 00:14:06,000 --> 00:14:10,000 That is my last can. I'm done. I'll see you later. 307 00:14:10,000 --> 00:14:11,000 Okay. 308 00:14:11,000 --> 00:14:14,000 Eventually with both samples collected, 309 00:14:14,000 --> 00:14:17,000 the Mythbusters head to Stanford University. 310 00:14:17,000 --> 00:14:18,000 Thank you, sir. 311 00:14:18,000 --> 00:14:19,000 You're welcome. 312 00:14:19,000 --> 00:14:22,000 Where Chris Adams and his mass spectrometer 313 00:14:22,000 --> 00:14:25,000 find out just how the two compare. 314 00:14:25,000 --> 00:14:31,000 This meticulous machine will detect exactly what each sample contains. 315 00:14:31,000 --> 00:14:33,000 Rat pee or otherwise. 316 00:14:33,000 --> 00:14:35,000 The results are in. 317 00:14:35,000 --> 00:14:36,000 We're done. 318 00:14:36,000 --> 00:14:37,000 The results are here. 319 00:14:37,000 --> 00:14:39,000 First up is the positive control. 320 00:14:39,000 --> 00:14:46,000 We identified 15 proteins specific to rat urine in the positive control samples. 321 00:14:46,000 --> 00:14:48,000 Urinary proteins. That would be rat pee. 322 00:14:48,000 --> 00:14:49,000 That's rat pee. 323 00:14:49,000 --> 00:14:50,000 Okay. 324 00:14:50,000 --> 00:14:53,000 But what about the reason we're here? 325 00:14:53,000 --> 00:14:55,000 Yeah, was there any urine on the random sample? 326 00:14:55,000 --> 00:14:57,000 Absolutely none detected. 327 00:14:57,000 --> 00:14:59,000 The real world cans are clean. 328 00:14:59,000 --> 00:15:00,000 They are. 329 00:15:00,000 --> 00:15:03,000 That is a load off my mind. 330 00:15:03,000 --> 00:15:06,000 Let's go and get some sodas. 331 00:15:06,000 --> 00:15:08,000 Turns out the black light had it wrong. 332 00:15:08,000 --> 00:15:13,000 That glowing organic matter, not rat pee, but harmless dust. 333 00:15:13,000 --> 00:15:17,000 The mass spectrometer, however, is completely precise. 334 00:15:17,000 --> 00:15:21,000 This machine is capable of detecting peptides on a femtomol level. 335 00:15:21,000 --> 00:15:23,000 Something like one in a bazillion. 336 00:15:23,000 --> 00:15:26,000 Or in other words, it's extremely sensitive. 337 00:15:26,000 --> 00:15:30,000 So if it says rat urine's not there, it ain't there. 338 00:15:30,000 --> 00:15:33,000 But given that millions of sodas are drunk every day, 339 00:15:33,000 --> 00:15:36,000 Jamie's not prepared to call this without a second opinion. 340 00:15:36,000 --> 00:15:42,000 He wants to find out if you could ever contract a deadly pathogen via a soda can. 341 00:15:42,000 --> 00:15:45,000 So how likely is it you can catch one of these bugs in this wire? 342 00:15:45,000 --> 00:15:47,000 Highly unlikely. 343 00:15:47,000 --> 00:15:54,000 In the case of let's brosis, number one, the usual route of transmission is through broken skin that comes into contact with contaminated bodies of water. 344 00:15:54,000 --> 00:15:59,000 Number two, the organism when ingested orally is rapidly killed in the stomach. 345 00:15:59,000 --> 00:16:07,000 So finally, let's spire is highly fragile and it is rapidly killed when it's exposed to a dried environment. 346 00:16:07,000 --> 00:16:16,000 So even if infected urine did make it onto a soda can, the pathogen would be long dead before anyone took a swig. 347 00:16:16,000 --> 00:16:18,000 Hey, so what do you say? 348 00:16:18,000 --> 00:16:26,000 Well, according to the good doctor, catching hentavirus or leptospirosis from rat pee on soda cans is all but impossible. 349 00:16:26,000 --> 00:16:34,000 Well, that's great. You couple that with our results where we found not a smidgen of rat protein whatsoever on a thousand randomly collected cans. 350 00:16:34,000 --> 00:16:38,000 And I think we can call this one busted. 351 00:16:38,000 --> 00:16:40,000 Yeah, busted. 352 00:16:41,000 --> 00:16:55,000 After the break, will a supercar skip a lake in four bounds and its cops and swobbers as Adam and Jamie turned dirt detectives. 353 00:16:55,000 --> 00:16:58,000 Mary had a little lamb as fleece was right in the snow. 354 00:16:59,000 --> 00:17:12,000 Usually when a car drives into water, it does anything but skip. 355 00:17:12,000 --> 00:17:18,000 But according to this myth, a supercar can leap a lake in four bounds. 356 00:17:18,000 --> 00:17:24,000 And at Freightliner HQ, our intrepid trio is about to put that to the test. 357 00:17:24,000 --> 00:17:26,000 Here we go. 358 00:17:26,000 --> 00:17:33,000 We're about ready to take this and do exactly like they did in the movie, going 50 miles an hour launching off the ramp and skipping it across water. 359 00:17:33,000 --> 00:17:38,000 Here we go. In three, two, one, hit it. 360 00:17:38,000 --> 00:17:45,000 Grant's actuators put the pedal to the metal and the mustard menace takes off. 361 00:17:45,000 --> 00:17:50,000 As the car gains speed, Grant expertly steers it straight down a guideline. 362 00:17:50,000 --> 00:17:51,000 45. 363 00:17:51,000 --> 00:17:52,000 Until... 364 00:17:52,000 --> 00:17:54,000 50 miles an hour. 365 00:17:57,000 --> 00:18:05,000 With a hop, a flip and a thump, the car crosses the pond but not quite as home. 366 00:18:05,000 --> 00:18:08,000 That car didn't skip, it flipped. 367 00:18:12,000 --> 00:18:13,000 Oh my God. 368 00:18:13,000 --> 00:18:14,000 I don't think... 369 00:18:14,000 --> 00:18:16,000 That was insane. 370 00:18:16,000 --> 00:18:20,000 Look at what it did though. It actually made it to the other side of the pond. 371 00:18:20,000 --> 00:18:22,000 That's not how it's supposed to do it. 372 00:18:22,000 --> 00:18:23,000 Wow. 373 00:18:23,000 --> 00:18:24,000 Oh wow. 374 00:18:24,000 --> 00:18:27,000 Oh my God, we destroyed this car. 375 00:18:28,000 --> 00:18:31,000 Now we matched pretty much every aspect of the movie. 376 00:18:31,000 --> 00:18:37,000 The ramp, the speed, the specifications of the car and we got a completely different result. 377 00:18:37,000 --> 00:18:43,000 What this means is that the movie stunt was fake, that it wasn't a real skip across a leg. 378 00:18:43,000 --> 00:18:51,000 Now the most likely scenario is that there was a submerged platform, just a few inches below the surface of the water, that the car actually bounced across. 379 00:18:51,000 --> 00:18:56,000 In addition, in the movie, the car lands on its rear wheels first. 380 00:18:56,000 --> 00:19:01,000 The only way it could have gotten that trajectory is if it were specifically weighted for the stunt. 381 00:19:01,000 --> 00:19:09,000 Our car, on the other hand, was weighted to match a stock off the lot 1980's era Lamborghini and it plummeted the nose first. 382 00:19:09,000 --> 00:19:14,000 All this to say, however you look at it, this myth is busted. 383 00:19:15,000 --> 00:19:19,000 Busted indeed, but surely they're not going to leave it there. 384 00:19:22,000 --> 00:19:26,000 Next, Adam and Jamie go on a grime wave. 385 00:19:27,000 --> 00:19:31,000 Relative filth, the myth and the plan, take one. 386 00:19:35,000 --> 00:19:38,000 Dude, this one's yours, you're leading this one in. 387 00:19:38,000 --> 00:19:39,000 Can you remind me? 388 00:19:39,000 --> 00:19:41,000 Yeah, most people think their toilet seats are pretty dirty. 389 00:19:41,000 --> 00:19:42,000 Yeah. 390 00:19:42,000 --> 00:19:50,000 This myth states that that's not necessarily the case, that there are many other locations and things within your average person's immediate vicinity that are far filthier 391 00:19:50,000 --> 00:19:52,000 than their toilet seat. 392 00:19:52,000 --> 00:19:53,000 That's what we're going to test. 393 00:19:53,000 --> 00:20:00,000 We're going to pick a bunch of different places, go out and take samples, grow cultures, compare the results, see what happens, that kind of thing. 394 00:20:00,000 --> 00:20:01,000 Exactly. Shall we start? 395 00:20:01,000 --> 00:20:02,000 Yeah. 396 00:20:02,000 --> 00:20:03,000 Okay. 397 00:20:03,000 --> 00:20:07,000 It seems every week there's a new claim about hidden household hazards. 398 00:20:07,000 --> 00:20:15,000 But are the microscopic critters on everyday items more menacing than the beastly bugs found on the old porcelain throne? 399 00:20:16,000 --> 00:20:18,000 Well, the mythbusters are on the swab. 400 00:20:18,000 --> 00:20:20,000 But where to start? 401 00:20:20,000 --> 00:20:25,000 Now you may be wondering what are the criteria under which we chose the samples that we were just about to test. 402 00:20:25,000 --> 00:20:27,000 And it's actually pretty straightforward. 403 00:20:27,000 --> 00:20:32,000 We looked for objects that you touch every single day that others might touch too. 404 00:20:32,000 --> 00:20:33,000 Great. 405 00:20:33,000 --> 00:20:38,000 But since germs aren't visible to the naked eye, they'll need a way to track them down. 406 00:20:38,000 --> 00:20:41,000 Allow me to demonstrate our sample collection methodology. 407 00:20:41,000 --> 00:20:46,000 It begins with a dry, cotton-tipped applicator, with which I swab a one inch square of the object in question. 408 00:20:46,000 --> 00:20:49,000 In this case, it's a scale model of the lunar lander. 409 00:20:49,000 --> 00:20:53,000 Then I dip that cotton swab in tryptic soy broth for exactly 10 seconds. 410 00:20:53,000 --> 00:20:56,000 This is basically like a growth medium, a sterile growth medium. 411 00:20:56,000 --> 00:20:58,000 It's a liquid petri dish, if you will. 412 00:20:58,000 --> 00:21:04,000 At the end of 10 seconds, which is now, I remove the cotton swab, cap and label my soy broth. 413 00:21:04,000 --> 00:21:07,000 Later, I'll use it to try and grow some bacteria. 414 00:21:07,000 --> 00:21:08,000 Yuck! 415 00:21:08,000 --> 00:21:10,000 If you'll excuse me, I've got some samples to collect. 416 00:21:11,000 --> 00:21:15,000 First up, our yardstick, the toilet seat. 417 00:21:16,000 --> 00:21:22,000 Mary had a little lamb. 418 00:21:22,000 --> 00:21:25,000 Its fleece was white as snow. 419 00:21:25,000 --> 00:21:28,000 Three, nine, 10 seconds. 420 00:21:28,000 --> 00:21:30,000 Money. 421 00:21:30,000 --> 00:21:33,000 Mary had a little lamb as fleece as white as snow. 422 00:21:33,000 --> 00:21:34,000 They're not regressing. 423 00:21:34,000 --> 00:21:38,000 The ride ensures that each sample is swabbed for the same count. 424 00:21:38,000 --> 00:21:40,000 Shopping cart handle. 425 00:21:40,000 --> 00:21:43,000 Mary had kitchen sponge. 426 00:21:43,000 --> 00:21:46,000 Everything they swabbed has one thing in common. 427 00:21:46,000 --> 00:21:47,000 A little lamb. 428 00:21:47,000 --> 00:21:49,000 Hotel room remote. 429 00:21:49,000 --> 00:21:54,000 In a plethora of reports, they've all been deemed dirtier than a toilet seat. 430 00:21:54,000 --> 00:21:56,000 Keyboard. 431 00:21:56,000 --> 00:21:58,000 Light switch. 432 00:21:58,000 --> 00:22:01,000 But can that really be true? 433 00:22:01,000 --> 00:22:03,000 Cell phone. 434 00:22:03,000 --> 00:22:05,000 Hold on a second. 435 00:22:05,000 --> 00:22:10,000 With the everyday eight collected, the guys call in Dr. Russell Vance, 436 00:22:10,000 --> 00:22:13,000 an expert in microbiology. 437 00:22:13,000 --> 00:22:15,000 You guys ready? 438 00:22:15,000 --> 00:22:16,000 Ready. 439 00:22:16,000 --> 00:22:17,000 Then let's begin. 440 00:22:17,000 --> 00:22:19,000 Okay. 441 00:22:19,000 --> 00:22:21,000 Number one, toilet seat. 442 00:22:21,000 --> 00:22:25,000 A precisely pepetted amount of each broth is carefully transferred 443 00:22:25,000 --> 00:22:27,000 onto an agar petri dish. 444 00:22:29,000 --> 00:22:32,000 End to the incubator they go. 445 00:22:32,000 --> 00:22:35,000 They'll sit there overnight at 98.6 degrees. 446 00:22:35,000 --> 00:22:39,000 And tomorrow, after a steamy night of bacteria breeding, 447 00:22:39,000 --> 00:22:42,000 there should be plenty of germy growths. 448 00:22:42,000 --> 00:22:44,000 Let's go. 449 00:22:44,000 --> 00:22:46,000 Next up. 450 00:22:46,000 --> 00:22:48,000 Dude, that is nasty. 451 00:22:48,000 --> 00:22:51,000 The results of the Mythbusters Grime Wave. 452 00:22:54,000 --> 00:22:57,000 Don't try anything you see on the show at home. 453 00:22:57,000 --> 00:22:59,000 Wear what you call experts. 454 00:23:00,000 --> 00:23:03,000 The Mythbusters are dishing the dirt. 455 00:23:03,000 --> 00:23:06,000 And last but not least, cell phone. 456 00:23:06,000 --> 00:23:11,000 Testing the myth that everyday items are more germ-ridden than a toilet seat. 457 00:23:11,000 --> 00:23:15,000 And after a night of micro multiplication. 458 00:23:15,000 --> 00:23:17,000 The colonies that are growing in there could be anything. 459 00:23:17,000 --> 00:23:19,000 They could be yeast, mold, bacteria, whatever. 460 00:23:19,000 --> 00:23:23,000 So what we're going to do is count and record the different types of colonies 461 00:23:23,000 --> 00:23:26,000 and also the other types of bacteria that are growing in there. 462 00:23:26,000 --> 00:23:28,000 And we'll pick the dirtiest ones. 463 00:23:28,000 --> 00:23:30,000 I see two. 464 00:23:30,000 --> 00:23:32,000 That's it? Just two from the toilet seat? 465 00:23:32,000 --> 00:23:34,000 Just two. 466 00:23:34,000 --> 00:23:36,000 This is already getting interesting. 467 00:23:36,000 --> 00:23:38,000 The toilet seat is remarkably clean. 468 00:23:38,000 --> 00:23:40,000 But that's not so true of the others. 469 00:23:40,000 --> 00:23:42,000 Particularly the kitchen sponge. 470 00:23:42,000 --> 00:23:47,000 Oh, dude, that is nasty. 471 00:23:47,000 --> 00:23:50,000 Oh, dude, that is nasty. 472 00:23:50,000 --> 00:23:52,000 I'm going to get a little bit of that. 473 00:23:52,000 --> 00:23:54,000 Dude, that is nasty. 474 00:23:54,000 --> 00:23:58,000 Have fun counting that. 475 00:23:58,000 --> 00:24:00,000 I'll see you next summer. 476 00:24:00,000 --> 00:24:02,000 Yeah. 477 00:24:02,000 --> 00:24:04,000 Well, we don't have that long. 478 00:24:04,000 --> 00:24:06,000 So Dr. Vance has a solution. 479 00:24:06,000 --> 00:24:08,000 I think it's almost uncountable. 480 00:24:08,000 --> 00:24:11,000 So then how do you write that down? 481 00:24:11,000 --> 00:24:14,000 Well, I would say that's just off the charts. 482 00:24:14,000 --> 00:24:20,000 The remaining six samples from cell phone to light switch are counted and locked. 483 00:24:20,000 --> 00:24:25,000 Well, that's it. All present and counted for. 484 00:24:25,000 --> 00:24:28,000 Which means it's time to sum up the results. 485 00:24:28,000 --> 00:24:31,000 So our everyday eight swaps have become eight Petri dishes, 486 00:24:31,000 --> 00:24:33,000 which in turn have yielded eight results. 487 00:24:33,000 --> 00:24:38,000 And those results are, in order from least filthy to most filthy, 488 00:24:38,000 --> 00:24:41,000 can you editors help me out with a graphic here? 489 00:24:41,000 --> 00:24:42,000 That's better. 490 00:24:42,000 --> 00:24:46,000 So you can see at number eight, with only two colonies, is the toilet seat. 491 00:24:46,000 --> 00:24:49,000 Then the colony counting increases only slightly until you reach it. 492 00:24:49,000 --> 00:24:52,000 Number four, the keyboard with 65. 493 00:24:52,000 --> 00:24:57,000 From there on things start to get really dirty as the colonies go through the roof 494 00:24:57,000 --> 00:25:01,000 with the light switch and the money before finally topping the chart, 495 00:25:01,000 --> 00:25:04,000 we have the kitchen sponge. 496 00:25:04,000 --> 00:25:07,000 A sample so numerous we couldn't even count it. 497 00:25:07,000 --> 00:25:11,000 So does this mean that the kitchen sponge is the dirtiest thing in your house? 498 00:25:11,000 --> 00:25:15,000 Well, it actually all depends on what your definition of dirty is. 499 00:25:15,000 --> 00:25:19,000 Sure, there's a ton of colonies, but suppose those colonies are all totally harmless, 500 00:25:19,000 --> 00:25:23,000 whereas the two colonies we found on the toilet seat are really nasty. 501 00:25:23,000 --> 00:25:27,000 What we need to know now is what we're looking at on those Petri dishes. 502 00:25:27,000 --> 00:25:30,000 Luckily, we found a microbiologist to help us out. 503 00:25:30,000 --> 00:25:32,000 Yep, it's over to Dr. Vance. 504 00:25:32,000 --> 00:25:34,000 There you go. Fabulous. 505 00:25:34,000 --> 00:25:39,000 To find out exactly what kinds of gasly germs lurk within our everyday eight. 506 00:25:45,000 --> 00:25:49,000 Can a car skip a pond like a skimming stone? 507 00:25:49,000 --> 00:25:51,000 No, apparently not. 508 00:25:51,000 --> 00:25:56,000 But of course, the Mythbusters never leave any stone unturned. 509 00:25:56,000 --> 00:25:59,000 All right, so the scene as portrayed in the movie is busted. 510 00:25:59,000 --> 00:26:02,000 A car going that fast hitting that ramp, there's no way it would skip to freedom. 511 00:26:02,000 --> 00:26:03,000 But that's got me thinking. 512 00:26:03,000 --> 00:26:08,000 I wonder what it would take for a sports car like that to make it all the way across the water surface by skipping. 513 00:26:08,000 --> 00:26:11,000 Well, that's why we have our patented small scale here at Mythbusters. 514 00:26:11,000 --> 00:26:14,000 We'll take a 112 scale car, a 112 scale pond. 515 00:26:14,000 --> 00:26:17,000 We'll fiddle around with the parameters until it works, and then we'll take a full scale. 516 00:26:17,000 --> 00:26:20,000 And those parameters include presence or absence of the ramp. 517 00:26:20,000 --> 00:26:22,000 What are we waiting for? Let's go! 518 00:26:22,000 --> 00:26:24,000 Speed. Don't forget the speed. 519 00:26:24,000 --> 00:26:30,000 And to find out exactly what it will take to skip a car, first they'll need a scale vehicle. 520 00:26:30,000 --> 00:26:33,000 So, what I have here is 112 scale Lamborghini. 521 00:26:33,000 --> 00:26:37,000 It's an exact replica in every detail except for one, the weight. 522 00:26:37,000 --> 00:26:40,000 They did not scale the weight correctly. 523 00:26:41,000 --> 00:26:46,000 Alright, so right now this weighs four pounds. I need to get it to two pounds. 524 00:26:46,000 --> 00:26:49,000 This is a pretty nice car. It kind of pains me to do this. 525 00:26:51,000 --> 00:26:53,000 Look at the detail on this thing. 526 00:26:53,000 --> 00:27:00,000 It's a little auto shop of horrors as Tori strips his teeny turbo down to two pounds. 527 00:27:05,000 --> 00:27:08,000 You're probably thinking to yourself, it's not aerodynamic anymore. 528 00:27:08,000 --> 00:27:11,000 Well, this is how I'm going to take care of that problem. 529 00:27:11,000 --> 00:27:14,000 I'm going to use some tape to cover up all the holes. 530 00:27:14,000 --> 00:27:19,000 That way it'll remain aerodynamic and light. 531 00:27:19,000 --> 00:27:24,000 So with a streamlined supercar, how's the small scale going to go down? 532 00:27:24,000 --> 00:27:29,000 So I have this car jacked up. All I need to do is hit the gas and then stick this car underneath the wheel, 533 00:27:29,000 --> 00:27:32,000 which will fire it out just like a baseball pitching machine. 534 00:27:32,000 --> 00:27:35,000 It'll go down the track, into the truck, and skip across the water. 535 00:27:35,000 --> 00:27:37,000 At least that's the plan. I'm really testing this yet. 536 00:27:39,000 --> 00:27:45,000 As a final touch, Tori adds a bike speedometer to track the speed of the car when it's pushed into the wheel. 537 00:27:45,000 --> 00:27:49,000 First things first, we're going to set it up just like in the movie with a slight ramp 538 00:27:49,000 --> 00:27:52,000 and a scale car going at a scale 50 miles an hour. 539 00:27:52,000 --> 00:27:55,000 Here we go in three, two, one. 540 00:27:58,000 --> 00:28:00,000 Wow, that was exciting. 541 00:28:01,000 --> 00:28:06,000 Maybe not, but off the rabbit, 50 miles per hour, the car noses into the water. 542 00:28:06,000 --> 00:28:08,000 Just like the full scale. 543 00:28:10,000 --> 00:28:15,000 Alright, so my theory is that we need to ditch the ramp and have the car come into the water at a lower angle. 544 00:28:15,000 --> 00:28:18,000 So for this next test, we're going to do it at myth speed. 545 00:28:18,000 --> 00:28:21,000 50 miles an hour or scale speed of 14 miles an hour. 546 00:28:21,000 --> 00:28:24,000 And we won't have the ramp, so we'll see if it works any better. 547 00:28:24,000 --> 00:28:26,000 Three, two, one. 548 00:28:27,000 --> 00:28:28,000 That was cool. 549 00:28:28,000 --> 00:28:33,000 Indeed it was. That was a small scale car skip. 550 00:28:33,000 --> 00:28:36,000 Now without the ramp going at 50 miles an hour, the car skipped. 551 00:28:36,000 --> 00:28:38,000 I mean, eventually it sank, but it did skip. 552 00:28:38,000 --> 00:28:41,000 So it's obvious the ramp is a hindrance. 553 00:28:41,000 --> 00:28:44,000 The shallower the angle of attack could better for this. 554 00:28:44,000 --> 00:28:49,000 And I think if we get the car going fast enough, we're going to get that little Lamborghini to skip the whole way. 555 00:28:49,000 --> 00:28:51,000 Well, for kicks and giggles, should we try and go faster? 556 00:28:51,000 --> 00:28:53,000 Like 100 miles an hour? 557 00:28:53,000 --> 00:28:54,000 Yeah. 558 00:28:56,000 --> 00:28:57,000 Hit it. 559 00:29:00,000 --> 00:29:01,000 20. 560 00:29:02,000 --> 00:29:03,000 28. 561 00:29:05,000 --> 00:29:06,000 Holy crap. 562 00:29:06,000 --> 00:29:07,000 Tori's right. 563 00:29:07,000 --> 00:29:14,000 At 100 miles per hour, the model car skips and would skip again, except it runs out of trough. 564 00:29:16,000 --> 00:29:17,000 Check out this high speed. 565 00:29:17,000 --> 00:29:23,000 At 28 miles an hour, which is 100 miles an hour for a real car, the car is skipping across the water, 566 00:29:23,000 --> 00:29:27,000 which means speed is going to be a huge factor when we go to do this full scale. 567 00:29:27,000 --> 00:29:28,000 But this is just small scale. 568 00:29:28,000 --> 00:29:30,000 I mean, this is a toy we're using right now. 569 00:29:30,000 --> 00:29:35,000 When we go to full scale using a car weighing 2600 pounds, who knows what's going to happen? 570 00:29:36,000 --> 00:29:37,000 Coming up. 571 00:29:37,000 --> 00:29:40,000 Everybody knows that cars with flames are more awesome. 572 00:29:40,000 --> 00:29:44,000 Our Intrepid Trio soup up for a super car skid. 573 00:29:52,000 --> 00:29:53,000 Dirt. 574 00:29:53,000 --> 00:29:54,000 It's everywhere. 575 00:29:54,000 --> 00:29:57,000 You can't run and you can't hide. 576 00:29:57,000 --> 00:30:02,000 But is there more frightening filth lurking on everyday items than on your toy seat? 577 00:30:02,000 --> 00:30:06,000 Adam and Jamie are finding out and the results are in. 578 00:30:06,000 --> 00:30:10,000 For those of you playing at home, it is finally time to count down the everyday eight. 579 00:30:10,000 --> 00:30:13,000 Now, this is the table based solely on colony count. 580 00:30:13,000 --> 00:30:17,000 And as you can see, kitchen sponge off the charts is the filthiest thing we found. 581 00:30:17,000 --> 00:30:20,000 Toilet seat, the cleanest. 582 00:30:20,000 --> 00:30:24,000 But check out what happens to this list when we count not only for the number of bacterial colonies, 583 00:30:24,000 --> 00:30:27,000 but also for how nasty they might be. 584 00:30:27,000 --> 00:30:31,000 Toilet seat moves up a couple of notches specifically because while it only had two colonies, 585 00:30:31,000 --> 00:30:34,000 those colonies were actually pretty nasty. 586 00:30:34,000 --> 00:30:38,000 The other two big movers, hotel remote control, moved down because it had some colonies, 587 00:30:38,000 --> 00:30:43,000 but they weren't actually bacteria and the cell phone moved up because what was on it was pretty nasty. 588 00:30:43,000 --> 00:30:49,000 But staying strong at number one, kitchen sponge, which had a synod, this stuff, 589 00:30:49,000 --> 00:30:52,000 which is apparently really bad if you have a weakened immune system. 590 00:30:52,000 --> 00:30:55,000 James Franklin Heidemann, what do you think? 591 00:30:55,000 --> 00:30:58,000 Nice work, but I don't think we can call it yet. 592 00:30:58,000 --> 00:31:02,000 I mean, it's only a single solitary swap. We need a larger sample size. 593 00:31:02,000 --> 00:31:07,000 All right. Well, what say we choose the top five? Toilet seat as a control plus the four top contenders 594 00:31:07,000 --> 00:31:11,000 and do a really nice large sample size with those. Our filthy five. 595 00:31:11,000 --> 00:31:12,000 Works for me. 596 00:31:12,000 --> 00:31:16,000 So to expand their sample size, they're off to UC Berkeley, 597 00:31:16,000 --> 00:31:21,000 where a class of microbiologists are about to start myth busting 101. 598 00:31:21,000 --> 00:31:22,000 Hello. 599 00:31:22,000 --> 00:31:23,000 Hello. 600 00:31:23,000 --> 00:31:28,000 We need your help. We've selected several surfaces that we're calling the filthy five. 601 00:31:28,000 --> 00:31:32,000 Now, these are surfaces that people come into contact with on a daily basis. 602 00:31:32,000 --> 00:31:37,000 And the question we need to answer is how dirty are they? That's where you come in. 603 00:31:37,000 --> 00:31:43,000 Now, in order to get a nice big fat sample size, we need 50 of you to collect us samples from the following. 604 00:31:43,000 --> 00:31:50,000 Toilet seat, a light switch, a kitchen sponge, money, and a computer keyboard. 605 00:31:50,000 --> 00:31:51,000 Can you guys help us? 606 00:31:51,000 --> 00:31:52,000 Yeah. 607 00:31:53,000 --> 00:31:54,000 Awesome. 608 00:31:54,000 --> 00:32:02,000 And with a hunger for the filthy five facts, our mob of microbiologists quickly get the swap done. 609 00:32:02,000 --> 00:32:05,000 Mary had a little lamb and its fleece was white as snow. 610 00:32:06,000 --> 00:32:15,000 Then once again, the samples are transferred to the Petriegar, incubated, counted, and finally DNA tested. 611 00:32:21,000 --> 00:32:26,000 Want more? Log on to Discovery.com slash MythBusters. Go. 612 00:32:30,000 --> 00:32:36,000 So far in the Cannonball Run Caper, we've seen a spectacular flip, but there's been no scale. 613 00:32:36,000 --> 00:32:41,000 But after small scale success, this myth is far from sunk. 614 00:32:42,000 --> 00:32:45,000 In the small scale test, we did learn a couple of important things. 615 00:32:45,000 --> 00:32:48,000 Yeah. First thing is that the ramp has got to go. 616 00:32:48,000 --> 00:32:53,000 We need to glide onto the water surface as seamlessly as possible, so the ramp is out. 617 00:32:53,000 --> 00:33:00,000 And also speed is a very important factor here. The faster the car is going, the better chances it has of getting across the pond. 618 00:33:00,000 --> 00:33:03,000 Now, how fast are we talking? We're talking rocket fast? 619 00:33:03,000 --> 00:33:06,000 No, it's actually surprising how little speed we need. 620 00:33:06,000 --> 00:33:12,000 All we would have to do is get another sports car, take it to the max, and it should make it across the water. 621 00:33:12,000 --> 00:33:16,000 But just in case, why don't I add some nitrous just for the extra little kick? 622 00:33:16,000 --> 00:33:17,000 Perfect. 623 00:33:17,000 --> 00:33:21,000 Wait, yes. I think I see some radio controlling in my future. 624 00:33:21,000 --> 00:33:23,000 It's like you're a mind reader. 625 00:33:23,000 --> 00:33:30,000 Yep, grants the controlling time, and luckily the team has found just the thing for test two. 626 00:33:31,000 --> 00:33:34,000 So we pretty much know what went wrong with the first car. 627 00:33:34,000 --> 00:33:40,000 Believe it or not, we got a second car of the same vintage, and this one is as good as gold. 628 00:33:40,000 --> 00:33:42,000 In fact, it is gold. 629 00:33:42,000 --> 00:33:46,000 But before we can take it back to Madras for a second try, I've got to do a little radio control magic. 630 00:33:48,000 --> 00:33:53,000 Now after it's tripped across the water, I managed to salvage the control system. 631 00:33:54,000 --> 00:33:55,000 And here it is. 632 00:33:55,000 --> 00:33:59,000 Now all I have to do is install this in the second car and we'll be ready to go. 633 00:33:59,000 --> 00:34:03,000 Since I've already done this once, it should be pretty easy. 634 00:34:03,000 --> 00:34:08,000 Once again, it's a simple setup of servos, cylinders, and wiring. 635 00:34:08,000 --> 00:34:14,000 Which one is it? The brown wire? The other brown wire? Or the other other brown wire? 636 00:34:14,000 --> 00:34:20,000 And while Grantson's installing his system, Jesse is giving the horsepower a boost. 637 00:34:20,000 --> 00:34:23,000 Okay, so what we have here is a normal engine. 638 00:34:23,000 --> 00:34:27,000 Air comes in, mixes with fuel, and then is dispersed down into the cylinders. 639 00:34:27,000 --> 00:34:30,000 Now we need this little engine to go as fast as we can possibly make it go. 640 00:34:30,000 --> 00:34:33,000 So we're going to be adding nitrous. 641 00:34:33,000 --> 00:34:39,000 Now what nitrous does is it's added into the mixture, helping cool it down, giving it a more dense charge. 642 00:34:39,000 --> 00:34:44,000 It adds more oxygen. All of this, making the rate of compression happen a whole lot faster. 643 00:34:44,000 --> 00:34:48,000 Which in turn, takes this little car go as fast as we wanted to go. 644 00:34:48,000 --> 00:34:52,000 You know what would make this car more awesome? Flames. 645 00:34:52,000 --> 00:34:56,000 Because everybody knows that cars with flames are more awesome. 646 00:35:00,000 --> 00:35:02,000 See? I told you. 647 00:35:02,000 --> 00:35:08,000 While flames undoubtedly add style, Jesse's knock system will add much needed speed. 648 00:35:08,000 --> 00:35:13,000 Alright, now being the fact that this is an older car, it's not going to want to get up to the speeds that we really want it to. 649 00:35:13,000 --> 00:35:17,000 So adding this nitrous is definitely going to help us get across that water. 650 00:35:17,000 --> 00:35:22,000 Especially by looking at all of our past tests, we need as much speed as we can get. 651 00:35:22,000 --> 00:35:25,000 So this is just going to be one of those added benefits. 652 00:35:25,000 --> 00:35:29,000 So basically all you got to do is hook up the nitrous, tap into the fuel lines, wire it, and it's ready to go. 653 00:35:29,000 --> 00:35:31,000 It's very, very simple. 654 00:35:31,000 --> 00:35:33,000 Okay, so the car is looking great. 655 00:35:33,000 --> 00:35:38,000 The radio system's in. Jesse's added the sheet metal on the bottom to reduce the drag and the knock system to increase the speed. 656 00:35:38,000 --> 00:35:41,000 And Tori has finished the nose cone. 657 00:35:41,000 --> 00:35:46,000 Now all we have to do is go back to Oregon and see once and for all if we can get a car to skim. 658 00:35:46,000 --> 00:35:48,000 Who could possibly go wrong? 659 00:35:48,000 --> 00:35:53,000 Next, it's sync or skim for the car to skim finale. 660 00:35:53,000 --> 00:35:57,000 My heart rate just went up. We started that engine. I'm ready to do this. 661 00:36:04,000 --> 00:36:13,000 Skipping. Kids can do it. Insects can do it. Even a well-aimed stone can do it. 662 00:36:13,000 --> 00:36:17,000 But can a car weighing over a ton do it? 663 00:36:17,000 --> 00:36:22,000 Well, the mythbusters are back at Freightliner HQ to find out. 664 00:36:22,000 --> 00:36:25,000 This ain't built for comfort. That's for sure. 665 00:36:25,000 --> 00:36:29,000 But man, it sure looks good. 666 00:36:29,000 --> 00:36:33,000 They've souped up their supercar to give it the best chance of a skip. 667 00:36:33,000 --> 00:36:37,000 But there's still one more modification to make. 668 00:36:37,000 --> 00:36:43,000 The first thing I have to do is get rid of this ramp. I'm going to get my big digger and knock this thing out of here. 669 00:36:43,000 --> 00:36:49,000 Counter-intuitively, ramping up this test means getting rid of the ramp. 670 00:36:49,000 --> 00:36:53,000 Who said TV's not glamorous? 671 00:36:53,000 --> 00:36:57,000 This little wire right here, this is the Go Baby Go wire. 672 00:36:58,000 --> 00:37:05,000 Now, my only concern is that this system gives out over 100 horsepower boost to the engine. 673 00:37:05,000 --> 00:37:09,000 That's basically doubling this little guy's horsepower. 674 00:37:09,000 --> 00:37:15,000 So, my concerns lie in the fact of possibly blowing up before it actually hits the water. 675 00:37:15,000 --> 00:37:19,000 But I have faith that it's actually going to make it all the way. Most of it. 676 00:37:19,000 --> 00:37:23,000 Thanks to the nitrous, it'll be traveling at twice the speed of the last test. 677 00:37:23,000 --> 00:37:28,000 And as far as traveling fast enough, each time it hits the surface and water downward, 678 00:37:28,000 --> 00:37:33,000 the opposing force of the water pushing up on the car should propel it forward. 679 00:37:33,000 --> 00:37:37,000 At least, that's the theory. 680 00:37:37,000 --> 00:37:42,000 Nitrous bottle is now open, system engaged. 681 00:37:42,000 --> 00:37:45,000 Nothing's going to happen until you push your Go button. 682 00:37:45,000 --> 00:37:46,000 Alright. 683 00:37:46,000 --> 00:37:47,000 No turning back now. 684 00:37:47,000 --> 00:37:52,000 Grant nervously makes his last minute checks, and then it's Go time. 685 00:37:52,000 --> 00:37:55,000 Alright, time to turn on the car. 686 00:38:00,000 --> 00:38:03,000 The vehicle is in drive. 687 00:38:03,000 --> 00:38:04,000 Yay! 688 00:38:04,000 --> 00:38:06,000 Okay. 689 00:38:06,000 --> 00:38:09,000 Dude, has it hit you yet? 690 00:38:09,000 --> 00:38:11,000 We are about to skip a car across the pond. 691 00:38:11,000 --> 00:38:13,000 This is crazy, man. 692 00:38:13,000 --> 00:38:15,000 This is totally, totally crazy. 693 00:38:15,000 --> 00:38:17,000 We're like Dumb on Louise. 694 00:38:17,000 --> 00:38:18,000 We are? 695 00:38:18,000 --> 00:38:20,000 I just say dumb things when I'm excited. 696 00:38:20,000 --> 00:38:21,000 Okay. 697 00:38:23,000 --> 00:38:27,000 In three, two, one, hit it. 698 00:38:27,000 --> 00:38:29,000 Okay, brakes off. 699 00:38:31,000 --> 00:38:32,000 And here we go. 700 00:38:32,000 --> 00:38:34,000 It's make or break time. 701 00:38:34,000 --> 00:38:39,000 Grant builds up the speed, then presses the Go baby Go button. 702 00:38:39,000 --> 00:38:40,000 Here goes the nitrous. 703 00:38:40,000 --> 00:38:44,000 The car surges forward, and then when it reaches the edge of the lake, 704 00:38:44,000 --> 00:38:46,000 physics take over. 705 00:38:51,000 --> 00:38:52,000 No! 706 00:38:52,000 --> 00:38:55,000 Please skip the car across the lake. 707 00:38:55,000 --> 00:39:01,000 The Mythbusters understandably can't contain their excitement. 708 00:39:01,000 --> 00:39:05,000 That was a full scale car skip. 709 00:39:05,000 --> 00:39:09,000 The high speed shows the super car skip twice across the 100 foot lake, 710 00:39:09,000 --> 00:39:12,000 and then continue to drive on the far bank. 711 00:39:12,000 --> 00:39:15,000 That is until Grant remembers to apply the brakes. 712 00:39:21,000 --> 00:39:22,000 Yes! 713 00:39:22,000 --> 00:39:24,000 I was piloting in the car. 714 00:39:24,000 --> 00:39:25,000 We hit the water. 715 00:39:25,000 --> 00:39:26,000 I saw a big splash. 716 00:39:26,000 --> 00:39:28,000 Like, okay, we hit the water. 717 00:39:28,000 --> 00:39:32,000 And then the water went down, and the car was still driving on the other side. 718 00:39:32,000 --> 00:39:33,000 We did it! 719 00:39:33,000 --> 00:39:34,000 We skipped! 720 00:39:36,000 --> 00:39:39,000 And this little guy, I'm so proud of it. 721 00:39:39,000 --> 00:39:40,000 I am so proud of it. 722 00:39:40,000 --> 00:39:43,000 We doubled its horsepower, more than doubled its horsepower. 723 00:39:43,000 --> 00:39:45,000 And it's still running. 724 00:39:45,000 --> 00:39:46,000 Look at this. 725 00:39:46,000 --> 00:39:48,000 I'm so happy. 726 00:39:48,000 --> 00:39:49,000 We did it. 727 00:39:49,000 --> 00:39:52,000 We set out to skip a car, and we actually did it. 728 00:39:52,000 --> 00:39:56,000 I mean, the small scale said it would work, but we didn't believe it. 729 00:39:56,000 --> 00:39:58,000 But we brought it out here, and it did it. 730 00:39:58,000 --> 00:40:00,000 It did exactly what the small scale did. 731 00:40:00,000 --> 00:40:01,000 Seeing is believing. 732 00:40:01,000 --> 00:40:03,000 I can't get over this. 733 00:40:03,000 --> 00:40:06,000 We actually skipped a car across the pond. 734 00:40:06,000 --> 00:40:09,000 It's so awesome that they're both still running. 735 00:40:09,000 --> 00:40:10,000 I can't believe it worked. 736 00:40:10,000 --> 00:40:11,000 I know. 737 00:40:11,000 --> 00:40:13,000 We got a car to flip and skip. 738 00:40:13,000 --> 00:40:15,000 All right, last one of the show. 739 00:40:15,000 --> 00:40:17,000 I know a shortcut. 740 00:40:17,000 --> 00:40:19,000 Go, go, go, go! 741 00:40:19,000 --> 00:40:21,000 Woo-hoo! 742 00:40:25,000 --> 00:40:28,000 You guys, that was pretty awesome. 743 00:40:28,000 --> 00:40:30,000 I have never seen anything like that before. 744 00:40:30,000 --> 00:40:35,000 I mean, we totally replicated the result, and we got a car that weighs over a ton 745 00:40:35,000 --> 00:40:37,000 to bounce across the surface of a pond. 746 00:40:37,000 --> 00:40:40,000 I know, and how cool was that high speed? 747 00:40:40,000 --> 00:40:41,000 Absolutely. 748 00:40:41,000 --> 00:40:43,000 But it's not a big deal. 749 00:40:43,000 --> 00:40:44,000 It's a high speed. 750 00:40:44,000 --> 00:40:45,000 Absolutely. 751 00:40:45,000 --> 00:40:49,000 But you know the most amazing thing is how little it actually took to do it. 752 00:40:49,000 --> 00:40:53,000 I mean, that was a 15-year-old car going a little bit more than highway speed. 753 00:40:53,000 --> 00:40:58,000 No rockets, no special tires, no ramp, and no underwater platform. 754 00:40:58,000 --> 00:40:59,000 And it skipped across the lake. 755 00:40:59,000 --> 00:41:01,000 Just like the small scale said it would. 756 00:41:01,000 --> 00:41:02,000 I agree. 757 00:41:02,000 --> 00:41:03,000 However, I'm with Grant. 758 00:41:03,000 --> 00:41:06,000 I just cannot believe how easy it was to do. 759 00:41:06,000 --> 00:41:07,000 In fact, it's so easy. 760 00:41:07,000 --> 00:41:11,000 I think we really need to stop and say, do not try this at home. 761 00:41:11,000 --> 00:41:12,000 Yes. 762 00:41:12,000 --> 00:41:15,000 Let's keep in mind the movie is still busted. 763 00:41:15,000 --> 00:41:18,000 Of course, going 50 miles an hour with a ramp and you're going for a swim. 764 00:41:18,000 --> 00:41:22,000 Yeah, but you get rid of that ramp, you put the pedal to the metal, and you just might 765 00:41:22,000 --> 00:41:24,000 make it home safe and dry. 766 00:41:24,000 --> 00:41:25,000 Yep. 767 00:41:25,000 --> 00:41:26,000 You know what I think? 768 00:41:26,000 --> 00:41:30,000 I think we need to look at that high speed shot one more time. 769 00:41:30,000 --> 00:41:31,000 Absolutely. 770 00:41:31,000 --> 00:41:37,000 Because with results like these, we're skipping over ourselves to show you them again. 771 00:41:42,000 --> 00:42:00,000 But spectacular high speeds aside, let's not forget that there's another dirty story awaiting 772 00:42:00,000 --> 00:42:01,000 conclusion. 773 00:42:01,000 --> 00:42:09,000 And after a swathe of swabs and a deluge of DNA tests, that conclusion is at last cooked. 774 00:42:09,000 --> 00:42:15,000 Ladies and gentlemen, it is finally time for the filthy five countdown in order from cleanest 775 00:42:15,000 --> 00:42:17,000 to dirtiest and starting at number five. 776 00:42:17,000 --> 00:42:23,000 We have the light switch number four, our control, the toilet seat number three, the keyboard 777 00:42:23,000 --> 00:42:28,000 number two, money and the number one dirtiest thing of everything that we tested. 778 00:42:28,000 --> 00:42:31,000 He's back on top after a year of hard training. 779 00:42:31,000 --> 00:42:34,000 Jamie, come on in and name number one. 780 00:42:34,000 --> 00:42:36,000 The kitchen sponge. 781 00:42:36,000 --> 00:42:38,000 Where does that leave us? 782 00:42:38,000 --> 00:42:42,000 Well, given the myth that there are everyday things in your house that are far filthier 783 00:42:42,000 --> 00:42:45,000 than your toilet seat, I'd say it's totally confirmed. 784 00:42:45,000 --> 00:42:46,000 Confirmed it is.