1 00:00:00,000 --> 00:00:05,000 Do not try any of the experiments you are about to see at home. 2 00:00:05,000 --> 00:00:07,000 You heard him. Don't do it. 3 00:00:09,000 --> 00:00:12,000 On this high velocity episode of Mythbusters... 4 00:00:12,000 --> 00:00:14,000 I'm all oiled up and ready to go. 5 00:00:14,000 --> 00:00:18,000 Adam and Janey wreak highway havoc in Spycar Escape. 6 00:00:18,000 --> 00:00:20,000 You're not gonna catch me. 7 00:00:20,000 --> 00:00:24,000 Just how difficult is it to give your pursuer the slip? 8 00:00:24,000 --> 00:00:26,000 I gotta say that's pretty effective. 9 00:00:26,000 --> 00:00:31,000 With in-car weapons that always seem to work so well in the movies. 10 00:00:31,000 --> 00:00:33,000 There it goes. It's deployed! 11 00:00:33,000 --> 00:00:38,000 Then Tori, Grant and Carrie play hardball with a myth of momentum. 12 00:00:38,000 --> 00:00:39,000 We're gonna see that ball drop. 13 00:00:39,000 --> 00:00:44,000 As they aim to find out if an object shot backwards while traveling forwards... 14 00:00:44,000 --> 00:00:47,000 I feel like a gladiator ready to be slaughtered. 15 00:00:47,000 --> 00:00:50,000 ...would really drop straight to the ground. 16 00:00:50,000 --> 00:00:52,000 That was a pretty good shot. 17 00:00:52,000 --> 00:00:57,000 Who are the Mythbusters? 18 00:00:57,000 --> 00:00:58,000 Adam Savage. 19 00:00:58,000 --> 00:01:00,000 We would need to bring some more power. 20 00:01:00,000 --> 00:01:01,000 And Jamie Heinemann. 21 00:01:01,000 --> 00:01:04,000 Relax. This one hurt a bit. 22 00:01:04,000 --> 00:01:08,000 Between them more than 30 years of special effects experience... 23 00:01:08,000 --> 00:01:10,000 We've got to keep the reflux! 24 00:01:10,000 --> 00:01:11,000 Joining them... 25 00:01:11,000 --> 00:01:13,000 Tori Belleggi. 26 00:01:13,000 --> 00:01:14,000 Hello, fire! 27 00:01:14,000 --> 00:01:15,000 Grant Imahara. 28 00:01:15,000 --> 00:01:16,000 Hey! 29 00:01:16,000 --> 00:01:17,000 And Carrie Byra. 30 00:01:17,000 --> 00:01:19,000 What's the matter here? See? 31 00:01:19,000 --> 00:01:21,000 They don't just tell the Myths. 32 00:01:21,000 --> 00:01:24,000 They put them to the test. 33 00:01:35,000 --> 00:01:36,000 Check it out. 34 00:01:36,000 --> 00:01:38,000 You know we love our movie myths. 35 00:01:38,000 --> 00:01:41,000 And specifically we love our Super Spy movie myths. 36 00:01:41,000 --> 00:01:45,000 This next one involves devices that a spy puts into their car... 37 00:01:45,000 --> 00:01:49,000 to instantly stop someone from following them in a car chase scenario. 38 00:01:49,000 --> 00:01:51,000 Ah, like a smoke screen. 39 00:01:51,000 --> 00:01:52,000 Exactly. 40 00:01:52,000 --> 00:01:54,000 And I'm thinking we test all the classics. 41 00:01:54,000 --> 00:01:56,000 Smoke screen, I'm thinking releasing a bunch of tax. 42 00:01:56,000 --> 00:01:58,000 And oil slick. 43 00:01:58,000 --> 00:02:00,000 Fast cars, dangerous gadgets. 44 00:02:00,000 --> 00:02:01,000 I'm up for it. 45 00:02:01,000 --> 00:02:02,000 I thought you would pay. 46 00:02:04,000 --> 00:02:07,000 The concept is almost as old as the automobile itself. 47 00:02:07,000 --> 00:02:12,000 Arming a car with the right kind of gadgets to ensure a slick getaway. 48 00:02:12,000 --> 00:02:14,000 Right on the arm! 49 00:02:14,000 --> 00:02:18,000 The boys are revved up to test three of the all-time classics... 50 00:02:18,000 --> 00:02:22,000 in a series of equally classic car chases. 51 00:02:24,000 --> 00:02:26,000 This is Adam. Can someone get me a car? 52 00:02:27,000 --> 00:02:29,000 This is Jamie. Make it sporty. 53 00:02:36,000 --> 00:02:37,000 Isn't that nice? 54 00:02:37,000 --> 00:02:39,000 That's cute. Drive it on in. 55 00:02:39,000 --> 00:02:40,000 Okay. 56 00:02:41,000 --> 00:02:43,000 This is SpyCar One. 57 00:02:43,000 --> 00:02:46,000 Right now it's a normal car, but when we're finished with it... 58 00:02:46,000 --> 00:02:51,000 it's going to have all the little tricks and gadgets that any self-respecting spy car would have. 59 00:02:51,000 --> 00:02:53,000 Just ought to do. 60 00:02:54,000 --> 00:02:56,000 So it's straight down to business. 61 00:02:56,000 --> 00:02:59,000 And the key word right now is deployment. 62 00:02:59,000 --> 00:03:02,000 Welcome to Jamie's Chop Shop. 63 00:03:02,000 --> 00:03:06,000 All movie fans know that most weapons are launched from the trunk... 64 00:03:06,000 --> 00:03:11,000 and a hole in the floor with a sliding trapdoor should fit the bill. 65 00:03:11,000 --> 00:03:15,000 Jamie's simple release can be sprung from a cord to the cockpit. 66 00:03:15,000 --> 00:03:17,000 It's not fancy. 67 00:03:17,000 --> 00:03:19,000 I ought to do it. 68 00:03:19,000 --> 00:03:20,000 But it works. 69 00:03:23,000 --> 00:03:27,000 With the car customized, it's off to the test track to load it with weapons. 70 00:03:29,000 --> 00:03:32,000 We're at the Alameda County Emergency Vehicle Operations Center... 71 00:03:32,000 --> 00:03:36,000 which is where the police practice chasing bad guys. 72 00:03:36,000 --> 00:03:38,000 Which means it's perfect for us. 73 00:03:38,000 --> 00:03:41,000 Of course there's no chase without a chase car... 74 00:03:41,000 --> 00:03:44,000 and an experienced daredevil to drive it. 75 00:03:44,000 --> 00:03:45,000 Morning, sir. 76 00:03:45,000 --> 00:03:46,000 Morning. 77 00:03:46,000 --> 00:03:47,000 How are you? 78 00:03:47,000 --> 00:03:48,000 I'm good. How are you? 79 00:03:48,000 --> 00:03:50,000 Good. Good day for a car chase? 80 00:03:50,000 --> 00:03:52,000 Everyday is a good day for a car chase. 81 00:03:55,000 --> 00:03:59,000 What is it that makes Brian uniquely qualified to perform this test with us? 82 00:03:59,000 --> 00:04:02,000 I ask you to cast your line back to driving in the rain. 83 00:04:02,000 --> 00:04:05,000 We'll Brian hydroplane it over 100 miles per hour... 84 00:04:05,000 --> 00:04:07,000 and get a 720 degree turn. 85 00:04:07,000 --> 00:04:09,000 Look at the internal camera. 86 00:04:09,000 --> 00:04:12,000 That impassive face on him is the face of confidence... 87 00:04:12,000 --> 00:04:14,000 and it is the face that will lead this test for us. 88 00:04:14,000 --> 00:04:17,000 If we can evade him, we can evade anybody. 89 00:04:18,000 --> 00:04:22,000 Escaping a driver who's more skilled than you means disabling his car. 90 00:04:22,000 --> 00:04:25,000 So, what's the first trick in Adam's trunk? 91 00:04:25,000 --> 00:04:30,000 They may look friendly, but these are quarter-inch pieces of hot roll steel... 92 00:04:30,000 --> 00:04:33,000 bent at right angles and welded into a tetrahedral arrangement... 93 00:04:33,000 --> 00:04:35,000 and then sharpened. 94 00:04:35,000 --> 00:04:37,000 These are road spikes. 95 00:04:37,000 --> 00:04:39,000 Always have one point facing up. 96 00:04:39,000 --> 00:04:43,000 I think they're going to be highly effective when I drop them from the back of the evading... 97 00:04:43,000 --> 00:04:44,000 Spy car. 98 00:04:44,000 --> 00:04:48,000 With over a hundred of these lethal little tire shredders, he might be right. 99 00:04:48,000 --> 00:04:51,000 But Jamie also has a point. 100 00:04:51,000 --> 00:04:55,000 Now, I have no doubt that these tacks are going to stick in the tires... 101 00:04:55,000 --> 00:05:00,000 but will they deflate the tires quickly enough to keep our spy happy? 102 00:05:00,000 --> 00:05:02,000 I'm not so sure. 103 00:05:02,000 --> 00:05:06,000 Well, first, a quick check on the rules of the chase. 104 00:05:06,000 --> 00:05:09,000 So, Brian, what are the criteria for escaping? 105 00:05:09,000 --> 00:05:13,000 If Adam's able to get far enough ahead of us that he actually loops and gets behind us... 106 00:05:13,000 --> 00:05:15,000 then he's gotten away. 107 00:05:15,000 --> 00:05:18,000 Also, if he makes a turn on the course someplace that I don't catch... 108 00:05:18,000 --> 00:05:21,000 and then we end up taking a different turn or a different route, then I've lost him. 109 00:05:21,000 --> 00:05:22,000 Okay, then. 110 00:05:22,000 --> 00:05:27,000 The cones are lined up to mark out a long and winding road. 111 00:05:27,000 --> 00:05:29,000 And they're ready to rumble. 112 00:05:29,000 --> 00:05:32,000 Okay, this is Spy Car in Evasion Techniques. 113 00:05:32,000 --> 00:05:33,000 The tacks. 114 00:05:33,000 --> 00:05:36,000 Eat my dust. 115 00:05:41,000 --> 00:05:42,000 Make no mistake. 116 00:05:42,000 --> 00:05:45,000 Both drivers are hell-bent on surviving the chase. 117 00:05:45,000 --> 00:05:49,000 Brian keeps a respectful distance of five or six car lengths. 118 00:05:49,000 --> 00:05:52,000 He's picking up a little speed. 119 00:05:52,000 --> 00:05:58,000 Eventually, right before a curve, Adam decides to drop his load. 120 00:05:58,000 --> 00:06:00,000 There we go. 121 00:06:00,000 --> 00:06:06,000 Despite his considerable skill, Brian's going too fast to avoid all the tacks. 122 00:06:06,000 --> 00:06:09,000 They stuck in. I can hear them. 123 00:06:09,000 --> 00:06:14,000 But at least for the moment, the chase car shows no signs of losing momentum. 124 00:06:17,000 --> 00:06:20,000 We must have had about a half a dozen at least in there. 125 00:06:20,000 --> 00:06:23,000 We're holding on just fine. 126 00:06:23,000 --> 00:06:26,000 I wouldn't take corners too fast in it, but... 127 00:06:26,000 --> 00:06:30,000 Okay, we got ya. Bang, bang, bang, bang, bang. 128 00:06:32,000 --> 00:06:36,000 So what happens? Didn't... Oh! I got you! 129 00:06:36,000 --> 00:06:39,000 Well, you did, but then you didn't. 130 00:06:39,000 --> 00:06:43,000 The tacks went into the tires, but we were on your tail for several minutes afterwards. 131 00:06:43,000 --> 00:06:44,000 It didn't slow us down. 132 00:06:44,000 --> 00:06:48,000 I thought that as soon as you hit the tacks, you'd be skidding off the road immediately. 133 00:06:48,000 --> 00:06:51,000 I've got flat tires, but you still didn't get away. 134 00:06:51,000 --> 00:06:54,000 No, I didn't get away. Shoot, I wouldn't have called that. 135 00:06:54,000 --> 00:06:58,000 The tacks eventually worked, but they took their sweet time. 136 00:06:58,000 --> 00:07:02,000 I'll say one thing else. While I'm fagging it out on this course, help and for leather, 137 00:07:02,000 --> 00:07:07,000 it's really disconcerting to look into my rear view mirror and see Brian passively driving after me. 138 00:07:07,000 --> 00:07:10,000 It's like a lion playing with his food. 139 00:07:10,000 --> 00:07:15,000 Jamie thinks he knows why the spikes kind of worked and kind of didn't. 140 00:07:15,000 --> 00:07:18,000 The problem with tacks is that they plug the hole that they create, 141 00:07:18,000 --> 00:07:20,000 and they don't let the air out quick enough. 142 00:07:20,000 --> 00:07:23,000 Now, eventually, sure, your tire is going to deflate, 143 00:07:23,000 --> 00:07:27,000 but as far as a pursuit goes, you could hang on for quite a while. 144 00:07:27,000 --> 00:07:31,000 As a quick escape option, the tacks didn't cut it. 145 00:07:31,000 --> 00:07:37,000 So it's onto phase two of the myth, blinding the pursuer in a cloud of smoke. 146 00:07:37,000 --> 00:07:43,000 Today, the role of smoke in our little Spy Car episode is going to be played by a military smoke grenade. 147 00:07:43,000 --> 00:07:49,000 Now we were offered the chance to use a minimum smoke grenade, but we said, hell no, give us maximum smoke. 148 00:07:49,000 --> 00:07:54,000 Military style. What does that look like? I don't know. Let's check it out. 149 00:07:55,000 --> 00:08:02,000 Providing the wind doesn't pick up, that should work nicely. 150 00:08:02,000 --> 00:08:08,000 This rig is about as simple as it gets. All you do is pull the pin, you've got smoke. 151 00:08:08,000 --> 00:08:12,000 All I've done is strap them to the back of the inside of the car. 152 00:08:12,000 --> 00:08:17,000 I've hooked them up to cables that go into the cockpit of the car. I pull on the cables. 153 00:08:17,000 --> 00:08:19,000 I'm gone in a puff of smoke. 154 00:08:19,000 --> 00:08:21,000 Well, that's the theory. 155 00:08:21,000 --> 00:08:23,000 Okay, smoke evasion. You guys ready? 156 00:08:23,000 --> 00:08:26,000 That's affirmative law breaker. Do your worst. 157 00:08:33,000 --> 00:08:40,000 Right from the get go, Janey sets a cracking pace through the traffic cones. 158 00:08:40,000 --> 00:08:46,000 Brian has no idea when to expect the smoke, but he doesn't have long to wait. 159 00:08:47,000 --> 00:08:53,000 For the first few seconds, the deployment looks picture perfect. 160 00:08:53,000 --> 00:09:00,000 It's right about now that it all goes horribly wrong as Janey's convertible starts filling with smoke. 161 00:09:00,000 --> 00:09:08,000 He misses the wall by a whisker and the chase is called off before Janey swallows more than his pride. 162 00:09:08,000 --> 00:09:10,000 I think he has to get out. 163 00:09:10,000 --> 00:09:17,000 You okay? Can we get some water over here for Janey right away? 164 00:09:17,000 --> 00:09:23,000 This smoke has gone literally everywhere. It's coming out of every nook and cranny of this car. 165 00:09:23,000 --> 00:09:28,000 Well, that right there was a real pink panther moment. 166 00:09:28,000 --> 00:09:33,000 I mean, we build these things and we're going to be able to get out of here. 167 00:09:33,000 --> 00:09:39,000 With the rushing air pushed over and around the windscreen, the car's interior became a low pressure zone, 168 00:09:39,000 --> 00:09:43,000 sucking much of the smoke back up over the trunk. 169 00:09:43,000 --> 00:09:45,000 That's a rig failure. 170 00:09:45,000 --> 00:09:49,000 I think it's a good idea to get out of here. 171 00:09:49,000 --> 00:09:52,000 I think it's a good idea to get out of here. 172 00:09:52,000 --> 00:09:55,000 I think it's a good idea to get out of here. 173 00:09:55,000 --> 00:09:58,000 I think it's a good idea to get out of here. 174 00:09:58,000 --> 00:10:03,000 We're going to have to get out of here and get much of the smoke back up over the trunk. 175 00:10:03,000 --> 00:10:08,000 That's a rig failure, not a technique failure. We're going to have to reset and try it again. 176 00:10:08,000 --> 00:10:12,000 Adam's right. It's unfair to condemn a myth due to faulty method. 177 00:10:12,000 --> 00:10:20,000 We'll reassess and reload to hopefully make the convertible cockpit a smoke-free zone. 178 00:10:20,000 --> 00:10:26,000 After the break, Carrie Grant and Tori take a treadmill walk on the wild side. 179 00:10:26,000 --> 00:10:29,000 I'm never going to be... 180 00:10:41,000 --> 00:10:43,000 So what are you so excited about? 181 00:10:43,000 --> 00:10:48,000 Well, it's our turn to try a new type of myth, the physics thought experiment. 182 00:10:48,000 --> 00:10:51,000 Great! So I'm going to get the old gray matter working. 183 00:10:51,000 --> 00:10:55,000 So here's how this one goes. Let's say you're driving along in a car at X miles an hour. 184 00:10:55,000 --> 00:10:59,000 You throw something out the back in the opposite direction at the same speed. 185 00:10:59,000 --> 00:11:01,000 Does it just fall straight down? 186 00:11:01,000 --> 00:11:04,000 Basically what you're saying is the forward momentum and the backward momentum 187 00:11:04,000 --> 00:11:06,000 cancel each other out completely. 188 00:11:06,000 --> 00:11:10,000 Exactly. Or is there some other factor like air resistance that makes it impossible? 189 00:11:10,000 --> 00:11:14,000 And I wonder if it works at six miles an hour. Will it also work at 60? 190 00:11:14,000 --> 00:11:16,000 That is what we're going to find out. 191 00:11:16,000 --> 00:11:21,000 It makes sense that an object subjected to equal and opposite forces, 192 00:11:21,000 --> 00:11:24,000 forwards and backwards, would drop like a stone. 193 00:11:24,000 --> 00:11:31,000 But unless we can prove it in real life, this simple equation's no more than an untested myth. 194 00:11:31,000 --> 00:11:32,000 So how are we going to test this one? 195 00:11:32,000 --> 00:11:35,000 How about a pickup truck with a treadmill on the back? 196 00:11:35,000 --> 00:11:38,000 A pickup truck drives forward at 10 miles an hour, a treadmill goes back at 10 miles an hour, 197 00:11:38,000 --> 00:11:40,000 and then one of us jumps on it. 198 00:11:40,000 --> 00:11:42,000 By one of us you mean Tori? 199 00:11:42,000 --> 00:11:45,000 What? So this is to see if I just fall straight down or get flung off the back. 200 00:11:45,000 --> 00:11:46,000 That's the idea. 201 00:11:46,000 --> 00:11:48,000 Yeah, great idea. 202 00:11:48,000 --> 00:11:53,000 Best if they bust out the gym equipment before Tori changes his mind. 203 00:11:53,000 --> 00:11:55,000 That seems safe enough. 204 00:11:55,000 --> 00:11:57,000 Normally treadmills are pretty straightforward. 205 00:11:57,000 --> 00:11:59,000 You set the speed and go. 206 00:11:59,000 --> 00:12:01,000 That is, of course, if you haven't been drinking. 207 00:12:01,000 --> 00:12:06,000 As Adam bravely proved, the treadmill is not to be trifled with. 208 00:12:06,000 --> 00:12:09,000 And now it's Tori's turn. 209 00:12:09,000 --> 00:12:13,000 My question is if he jumps onto a moving treadmill, 210 00:12:13,000 --> 00:12:17,000 will it slow down and actually throw him off at a slower speed? 211 00:12:17,000 --> 00:12:21,000 To test this, we're going to put a 180 pound load onto the treadmill, 212 00:12:21,000 --> 00:12:23,000 see if it slows down. 213 00:12:23,000 --> 00:12:27,000 If it does, then we'll turn it up until it throws it off at the target speed. 214 00:12:27,000 --> 00:12:32,000 According to the manual, the maximum speed of the treadmill is 10 miles per hour. 215 00:12:32,000 --> 00:12:35,000 That's fast enough to get the stripes strobing. 216 00:12:35,000 --> 00:12:37,000 That looks a little crazy to me. 217 00:12:37,000 --> 00:12:39,000 It looks a lot crazy. 218 00:12:39,000 --> 00:12:41,000 That looks so dangerous. 219 00:12:41,000 --> 00:12:43,000 I would not want to try to jump on that. 220 00:12:43,000 --> 00:12:45,000 And at least for the moment, he doesn't. 221 00:12:45,000 --> 00:12:50,000 That was kind of a problem. 222 00:12:50,000 --> 00:12:52,000 In fact, it was just what Grant predicted. 223 00:12:52,000 --> 00:12:56,000 The bag slowed the belt down to a relative crawl. 224 00:12:56,000 --> 00:12:58,000 It actually covers fairly quickly. 225 00:12:58,000 --> 00:13:03,000 And it gets back up to 5.45 miles per hour. 226 00:13:03,000 --> 00:13:06,000 All right, now the tricky part is doing it without falling. 227 00:13:06,000 --> 00:13:08,000 I suggest you tuck and roll. 228 00:13:08,000 --> 00:13:14,000 So to balance the myth, the truck should also move forwards at 5.5 miles per hour. 229 00:13:14,000 --> 00:13:18,000 All that remains is to attach one to the other. 230 00:13:18,000 --> 00:13:20,000 Are you really going to run on this thing, huh? 231 00:13:20,000 --> 00:13:22,000 Not so much run. 232 00:13:22,000 --> 00:13:24,000 More just fly off the back. 233 00:13:24,000 --> 00:13:30,000 Four bolts later, this traveling treadmill is primed for a field trip. 234 00:13:30,000 --> 00:13:36,000 They're bound for the Concord Naval Weapon Station, where the roads are long and level. 235 00:13:36,000 --> 00:13:38,000 That's not going anywhere. 236 00:13:38,000 --> 00:13:40,000 No, that's good. 237 00:13:40,000 --> 00:13:42,000 Should be real safe. Real safe. 238 00:13:42,000 --> 00:13:46,000 That would be the least of our safety concerns, I think. 239 00:13:46,000 --> 00:13:48,000 Straps on the famous red suit. 240 00:13:48,000 --> 00:13:52,000 Carrie still can't understand why his knee pads are traveling. 241 00:13:52,000 --> 00:13:56,000 You got dragged by a horse and it didn't seem like a bad idea. 242 00:13:56,000 --> 00:13:58,000 Got buried alive, didn't seem like a bad idea. 243 00:13:58,000 --> 00:14:00,000 Whoa, whoa, stop, stop! 244 00:14:00,000 --> 00:14:04,000 You got in a ring with a bullet, didn't seem like a bad idea. 245 00:14:04,000 --> 00:14:06,000 He's looking right at us. 246 00:14:06,000 --> 00:14:08,000 This is a bad idea. 247 00:14:08,000 --> 00:14:10,000 I feel like a gladiator ready to be slaughtered. 248 00:14:10,000 --> 00:14:14,000 We'll chalk that one up as a yes. 249 00:14:14,000 --> 00:14:18,000 So here's the setup. For our control test, our truck is going to be stationary. 250 00:14:18,000 --> 00:14:22,000 Troy's going to drop under the treadmill and then project off the end of the truck in a gentle arc. 251 00:14:22,000 --> 00:14:26,000 Okay, so this is our control test. You ready? 252 00:14:26,000 --> 00:14:28,000 I'm ready. I'm never going to be. 253 00:14:28,000 --> 00:14:34,000 Famous last words as a telephone call disrupts the filming. 254 00:14:34,000 --> 00:14:36,000 Hello? 255 00:14:36,000 --> 00:14:38,000 Who is it? 256 00:14:38,000 --> 00:14:40,000 Yeah, we've got the insurance company shipped. 257 00:14:40,000 --> 00:14:42,000 This is Brian. He's our director. 258 00:14:42,000 --> 00:14:44,000 You should know better. 259 00:14:44,000 --> 00:14:46,000 What's going on? 260 00:14:46,000 --> 00:14:54,000 With uncanny timing, the office has called up to tell them that Tori cannot take the fall. 261 00:14:54,000 --> 00:15:01,000 Okay, so this is unusual. We're just about to go for it and our producer gets a phone call from the insurers. 262 00:15:01,000 --> 00:15:07,000 Apparently, this is way too dangerous for Tori to attempt, this uncontrollable fall. 263 00:15:07,000 --> 00:15:13,000 So I think we're going to have to go for the next best thing, which is sandbags or something. 264 00:15:13,000 --> 00:15:19,000 So while Tori stands down, the supply truck is ransacked for raw materials. 265 00:15:19,000 --> 00:15:21,000 Okay, what do we got? 266 00:15:21,000 --> 00:15:27,000 They're looking to build a substitute fall guide, so coveralls and a blow-up doll fit the bill. 267 00:15:27,000 --> 00:15:30,000 How's that? Has it gotten into the legs? 268 00:15:30,000 --> 00:15:32,000 Oh, it is. It's getting heavy. 269 00:15:32,000 --> 00:15:36,000 And there's a real bonus to having a sand-filled stand-in. 270 00:15:36,000 --> 00:15:44,000 They can fill it to just a fraction of Tori's weight, so they can run their tests at 10 miles per hour, not the planned five. 271 00:15:44,000 --> 00:15:47,000 Not bad for a stand-in, Tori. 272 00:15:47,000 --> 00:15:52,000 It's only fitting that the man who missed out gets to discharge his stunt double. 273 00:15:52,000 --> 00:15:56,000 Alright, here we go. 10 miles an hour. 274 00:15:56,000 --> 00:16:00,000 In three, two, one. 275 00:16:00,000 --> 00:16:03,000 I am so glad that that wasn't you, man. 276 00:16:03,000 --> 00:16:06,000 That was an arc. I wouldn't say a gentle arc. 277 00:16:06,000 --> 00:16:11,000 Nor would we, and it's probably time to admit that the safety team had a fair point. 278 00:16:11,000 --> 00:16:17,000 So in our control test, stand-in Tori was thrown six feet away from the treadmill from a height of three and a half feet. 279 00:16:17,000 --> 00:16:21,000 What this means is he didn't fall straight down, but that's not a surprise. 280 00:16:21,000 --> 00:16:24,000 Now it's time to move on. 281 00:16:25,000 --> 00:16:34,000 Okay, this is the main test. I'm going to drive the pickup at 10 miles an hour while Tori throws his sand-in onto the treadmill right in front of the high-speed cameras. 282 00:16:34,000 --> 00:16:42,000 If the sack of sand comes even close to falling straight to the ground, we'll finally know that this myth is on track. 283 00:16:42,000 --> 00:16:48,000 It's a rare case where the team gets excited by a lack of spectacle. 284 00:16:48,000 --> 00:16:52,000 Still, best check the high speed. 285 00:16:52,000 --> 00:16:55,000 So watch that point right there. 286 00:16:55,000 --> 00:16:57,000 Oh, nice timing on the drop. 287 00:16:57,000 --> 00:17:00,000 It pretty much dropped straight down. 288 00:17:00,000 --> 00:17:04,000 I mean, compared to our control test, it would have been out there. 289 00:17:04,000 --> 00:17:06,000 Yeah. Here, straight down. 290 00:17:06,000 --> 00:17:08,000 That is really cool. 291 00:17:08,000 --> 00:17:10,000 So there might be some merit to this myth. 292 00:17:10,000 --> 00:17:12,000 Absolutely. 293 00:17:12,000 --> 00:17:17,000 The morning's testing was a total success, and they'd learned something along the way. 294 00:17:17,000 --> 00:17:20,000 First of all, we learned that Tori is more important than we thought. 295 00:17:20,000 --> 00:17:22,000 We can't just chuck him off the back of a truck. 296 00:17:22,000 --> 00:17:25,000 Secondly, we learned something from our 10-mile-an-hour test. 297 00:17:25,000 --> 00:17:28,000 We had the treadmill going at 10 miles an hour on a stationary truck. 298 00:17:28,000 --> 00:17:32,000 We dropped our sand-in Tori, and he fell in a little arc. 299 00:17:32,000 --> 00:17:40,000 Then we drove exactly 10 miles an hour, dropped our sand-in Tori in the same position, and he went straight down. 300 00:17:40,000 --> 00:17:44,000 But this is Mythbusters, and we just can't stop there. 301 00:17:47,000 --> 00:17:52,000 Coming up, Adam and Jamie look for satisfaction in traction. 302 00:17:52,000 --> 00:17:55,000 I gotta say, that's pretty effective. 303 00:18:00,000 --> 00:18:08,000 So far, the spikes are a bust, and the smoke is a maybe in our spy car evasion myth. 304 00:18:08,000 --> 00:18:14,000 Given that Jamie almost gassed himself first time around, he's made some modifications. 305 00:18:14,000 --> 00:18:18,000 I didn't like inhaling all that smoke, so I've done a couple of things. 306 00:18:18,000 --> 00:18:22,000 The first is that I've put the smoke bombs out away from the car. 307 00:18:22,000 --> 00:18:25,000 And the second is, Adam's gonna drive. 308 00:18:27,000 --> 00:18:32,000 So the scene is set for a smarter and healthier smoke screen. 309 00:18:32,000 --> 00:18:34,000 All right Jamie, are you ready? 310 00:18:34,000 --> 00:18:35,000 We're ready. 311 00:18:35,000 --> 00:18:39,000 Okay, eat my smoke. 312 00:18:40,000 --> 00:18:44,000 Adam leads Brian on a merry chase. 313 00:18:44,000 --> 00:18:46,000 You know this is pretty fun. 314 00:18:46,000 --> 00:18:50,000 Till the time comes to pull the pin on those twin grenades. 315 00:18:50,000 --> 00:18:52,000 Oh, there we go. 316 00:18:55,000 --> 00:18:58,000 I gotta say, that's pretty effective. 317 00:18:59,000 --> 00:19:04,000 The smoke comes thick and fast as the chase car slows to a crawl. 318 00:19:04,000 --> 00:19:05,000 Oh. 319 00:19:05,000 --> 00:19:09,000 And Adam actually starts to catch up. 320 00:19:13,000 --> 00:19:19,000 With the red car now in Brian's rear view mirror, Adam's officially shaken his tail. 321 00:19:28,000 --> 00:19:30,000 I think that's a win. 322 00:19:30,000 --> 00:19:31,000 Good job. 323 00:19:31,000 --> 00:19:33,000 That was awesome. 324 00:19:34,000 --> 00:19:39,000 At one point I looked over and Jamie and Brian were like all the way across the course. 325 00:19:39,000 --> 00:19:41,000 At that point I figured I had it. 326 00:19:41,000 --> 00:19:46,000 With one crucial adjustment, the smoke screen worked big time. 327 00:19:46,000 --> 00:19:51,000 Now to move on to a test that should push Brian's skills to the limit. 328 00:19:51,000 --> 00:19:54,000 Well, you know this is good for the taste buds and bad for the waistline. 329 00:19:54,000 --> 00:19:58,000 The question is, is it good for the escapee and bad for the pursuer? 330 00:19:58,000 --> 00:20:00,000 I think it will be. 331 00:20:00,000 --> 00:20:04,000 As Adam implied, we are doing our best to save the planet. 332 00:20:04,000 --> 00:20:08,000 The lubricant of choice is vegetable oil. 333 00:20:08,000 --> 00:20:11,000 Okay guys, I'm all oiled up and ready to go. 334 00:20:11,000 --> 00:20:12,000 Are you ready? 335 00:20:12,000 --> 00:20:14,000 We're ready, yes. 336 00:20:14,000 --> 00:20:16,000 This should be slick. 337 00:20:18,000 --> 00:20:22,000 Knowing what's coming won't help Brian avoid a potential disaster. 338 00:20:22,000 --> 00:20:25,000 The course is too narrow to skirt around the slick. 339 00:20:25,000 --> 00:20:30,000 And he doesn't know where or when Jamie plans to give him the slip. 340 00:20:32,000 --> 00:20:34,000 And then we see oil pour out of his back. 341 00:20:34,000 --> 00:20:38,000 And Brian tries to avoid it, but actually because Jamie does it on the turn, 342 00:20:38,000 --> 00:20:41,000 it sort of crosses the whole road and we can't avoid it. 343 00:20:41,000 --> 00:20:44,000 The chase car has clearly lost traction. 344 00:20:44,000 --> 00:20:50,000 It slips and it slides as Brian struggles to point the nose forward and stay on the track. 345 00:20:50,000 --> 00:20:51,000 Definitely made a slick. 346 00:20:51,000 --> 00:20:53,000 Yes, definitely. 347 00:20:53,000 --> 00:21:00,000 He's lost valuable time as the car careens sideways and Jamie decides to quit while he's ahead. 348 00:21:00,000 --> 00:21:03,000 At speed, the rig worked perfectly. 349 00:21:03,000 --> 00:21:08,000 Unfortunately, it didn't cause us to totally spin out and lose control of our car. 350 00:21:08,000 --> 00:21:12,000 Jamie did get far ahead, but Brian was able to stay on the road. 351 00:21:12,000 --> 00:21:14,000 So where does that leave us overall? 352 00:21:14,000 --> 00:21:16,000 Well, it's tally them up. 353 00:21:16,000 --> 00:21:17,000 Tax. 354 00:21:17,000 --> 00:21:18,000 Busted. 355 00:21:18,000 --> 00:21:19,000 Smoke screen. 356 00:21:19,000 --> 00:21:20,000 Confirmed. 357 00:21:20,000 --> 00:21:21,000 Oil slick. 358 00:21:21,000 --> 00:21:22,000 Somewhere in the middle. 359 00:21:22,000 --> 00:21:23,000 I agree. 360 00:21:23,000 --> 00:21:24,000 Somewhere in the middle. 361 00:21:24,000 --> 00:21:27,000 All right, let's get out of here and slowly please. 362 00:21:29,000 --> 00:21:33,000 That's three classic evasion techniques done in Dustin. 363 00:21:33,000 --> 00:21:37,000 But they're having way too much fun to stop here. 364 00:21:43,000 --> 00:21:48,000 Carrie, Grant and Tori are trying to confirm the myth that a dead weight drops straight to the ground 365 00:21:48,000 --> 00:21:53,000 if its forward momentum is exactly the same as its backwards propulsion. 366 00:21:53,000 --> 00:21:58,000 So far, a mobile treadmill seems to have proved the point. 367 00:21:58,000 --> 00:22:01,000 True, but you know the fans are never going to be happy if we stop right there. 368 00:22:01,000 --> 00:22:03,000 We have to test this at higher speeds. 369 00:22:03,000 --> 00:22:04,000 All right, why don't we ramp it up? 370 00:22:04,000 --> 00:22:07,000 We'll build an air cannon, fire a soccer ball at 60 miles an hour. 371 00:22:07,000 --> 00:22:10,000 We'll do it again inside of a moving vehicle going 60 miles an hour. 372 00:22:10,000 --> 00:22:13,000 See if the energies cancel each other out and we get a vertical drop. 373 00:22:13,000 --> 00:22:14,000 Love it. 374 00:22:14,000 --> 00:22:15,000 Let's do it. 375 00:22:15,000 --> 00:22:20,000 Grant gets the task of building the cannon and he's not one for half measures. 376 00:22:20,000 --> 00:22:23,000 This is our next step in testing this myth. 377 00:22:23,000 --> 00:22:27,000 It's the barrel of the largest air cannon I have ever built. 378 00:22:28,000 --> 00:22:29,000 Okay, here we go. 379 00:22:29,000 --> 00:22:32,000 9 psi in three, two, one. 380 00:22:34,000 --> 00:22:37,000 Yep, that looked like 60 miles an hour to me. 381 00:22:38,000 --> 00:22:41,000 At a check of the high speed confirms the call. 382 00:22:42,000 --> 00:22:44,000 The good news is that we have our number. 383 00:22:44,000 --> 00:22:49,000 We now know that 9 psi equals 60 miles an hour out of the barrel. 384 00:22:50,000 --> 00:22:51,000 Perfect. 385 00:22:51,000 --> 00:22:52,000 Great. 386 00:22:52,000 --> 00:22:53,000 That's our target speed. 387 00:22:53,000 --> 00:22:54,000 All right, we're there. 388 00:22:54,000 --> 00:22:55,000 Well, almost. 389 00:22:55,000 --> 00:22:59,000 It's now back to Concord to see if they've got the balance just right. 390 00:23:00,000 --> 00:23:04,000 All right, time to give this experiment a shot of steroids. 391 00:23:04,000 --> 00:23:07,000 Logistically, this is going to be a very difficult experiment. 392 00:23:07,000 --> 00:23:11,000 Everything has to come together for it to actually yield the results we want. 393 00:23:11,000 --> 00:23:13,000 I mean, the small scale was brilliant. 394 00:23:13,000 --> 00:23:16,000 If we can get anywhere close to that, I will be happy. 395 00:23:17,000 --> 00:23:20,000 But Tori's already anticipating trouble down the road. 396 00:23:21,000 --> 00:23:24,000 My feeling is, Grant's going to prematurely hit that button 397 00:23:24,000 --> 00:23:28,000 and the soccer ball is not actually going to make it in the high speed shot. 398 00:23:28,000 --> 00:23:29,000 We'll see what happens. 399 00:23:29,000 --> 00:23:30,000 All right, you guys ready? 400 00:23:31,000 --> 00:23:33,000 Cannon is armed and truck is in place. 401 00:23:33,000 --> 00:23:34,000 We're ready on your go, Tori. 402 00:23:35,000 --> 00:23:36,000 Hit it. 403 00:23:38,000 --> 00:23:42,000 20, 30, 40, 50. 404 00:23:44,000 --> 00:23:45,000 I'm going to get to 60. 405 00:23:46,000 --> 00:23:47,000 Come on. 406 00:23:47,000 --> 00:23:48,000 Okay. 407 00:23:49,000 --> 00:23:51,000 And fire. 408 00:23:52,000 --> 00:23:53,000 Hey! 409 00:23:53,000 --> 00:23:55,000 That was a pretty good shot. 410 00:23:56,000 --> 00:23:57,000 It's in the high speed. 411 00:23:57,000 --> 00:24:01,000 Given how hard this is to get right, it's a mighty first effort, 412 00:24:01,000 --> 00:24:03,000 but the ball did bounce backwards. 413 00:24:07,000 --> 00:24:08,000 It's not perfect. 414 00:24:08,000 --> 00:24:10,000 It's not the same results as the other one. 415 00:24:10,000 --> 00:24:11,000 That's what I'm saying. 416 00:24:11,000 --> 00:24:14,000 This should drop straight down, not fly backwards. 417 00:24:14,000 --> 00:24:19,000 It's agreed that either the car was too slow or the cannon too fast. 418 00:24:19,000 --> 00:24:22,000 The afternoon rolls on as a series of runs. 419 00:24:22,000 --> 00:24:24,000 The ball did not drop straight down. 420 00:24:26,000 --> 00:24:28,000 Never quite seemed to hit the mark. 421 00:24:28,000 --> 00:24:29,000 Looking good. 422 00:24:31,000 --> 00:24:33,000 And he fired it too soon. 423 00:24:33,000 --> 00:24:35,000 But the ball still bounced backwards. 424 00:24:36,000 --> 00:24:42,000 25 attempts later, they haven't come close to seeing the soccer ball drop like a stone. 425 00:24:42,000 --> 00:24:49,000 Some even bounced forwards, and it could be the cannon, the car, or the myth that's at fault. 426 00:24:49,000 --> 00:24:53,000 We could be out here all day and not get a result. 427 00:24:53,000 --> 00:24:56,000 This might be the time to rethink their approach. 428 00:24:56,000 --> 00:24:59,000 After all, no one said science was meant to be easy. 429 00:24:59,000 --> 00:25:08,000 Up next, Jamie and Adam take on each other in an empty head spy car challenge. 430 00:25:08,000 --> 00:25:09,000 Not hard to do it. 431 00:25:13,000 --> 00:25:15,000 Please do not try what we do on the show at home. 432 00:25:15,000 --> 00:25:17,000 We're what you call experts. 433 00:25:17,000 --> 00:25:18,000 It's safer that way. 434 00:25:22,000 --> 00:25:27,000 Adam and Jamie have already tested three classic spy car evasion techniques. 435 00:25:27,000 --> 00:25:31,000 Tax, smoke, and a 10 gallon oil slip. 436 00:25:34,000 --> 00:25:42,000 And the best way to keep the thrills coming is getting our two spies to take on each other with weapons they'll both build from scratch. 437 00:25:42,000 --> 00:25:45,000 Pop quiz, what do you see here on the table? 438 00:25:45,000 --> 00:25:48,000 You may see a random clutch in the plumbing parts. 439 00:25:48,000 --> 00:25:53,000 I see the next evolution in spy evasion technology. 440 00:25:54,000 --> 00:25:55,000 Ow! 441 00:25:55,000 --> 00:25:59,000 If you think Adam's being deliberately obscure, give a load of Jamie. 442 00:25:59,000 --> 00:26:02,000 You know what they say, the best defense is a good offense. 443 00:26:02,000 --> 00:26:10,000 Well, I figure I'm going to make something that I can take right to the pursuer's car, deliver it point blank, and take him out. 444 00:26:10,000 --> 00:26:21,000 Ensuring their secrets remain just that, a huge curtain divides the workshop, while Adam assembles what looks and sounds like a prototype space shuttle toilet. 445 00:26:22,000 --> 00:26:25,000 Jamie gets low down, nasty. 446 00:26:26,000 --> 00:26:27,000 Yeah, baby. 447 00:26:28,000 --> 00:26:30,000 That thing starts to dig in. 448 00:26:30,000 --> 00:26:32,000 We've got some trouble on our hands. 449 00:26:34,000 --> 00:26:43,000 It's clear from the outset this mystery rig will be heavy duty, as gear teeth are cut into crommely steel with a plasma torch. 450 00:26:43,000 --> 00:26:49,000 Whatever he's building, it's a safe bet this would get you suspended from metal shop. 451 00:26:51,000 --> 00:26:53,000 That ought to do it. 452 00:26:53,000 --> 00:26:59,000 After hours of diligent, diabolical labor, Jamie's finally up for some show and tell. 453 00:26:59,000 --> 00:27:10,000 I've made this relatively simple looking little thing out of crommely steel, and it's flat enough to mount underneath my car out of sight and out of mind. 454 00:27:10,000 --> 00:27:19,000 But it's going to be mounted in a gun, and I'm going to drive up to the pursuer's car, fire this from under my car right over the ground to under their car. 455 00:27:19,000 --> 00:27:23,000 At which point it changes, and it goes like that. 456 00:27:23,000 --> 00:27:28,000 If it works on the day, that's a bona fide car crippler. 457 00:27:31,000 --> 00:27:32,000 Yeah. 458 00:27:32,000 --> 00:27:36,000 Adam, meantime, has taken his show on the road. 459 00:27:36,000 --> 00:27:41,000 In a radical twist, it looks like he's trying to slow himself down. 460 00:27:41,000 --> 00:27:43,000 That's promising right there. 461 00:27:43,000 --> 00:27:51,000 The idea is to shut down the chase car with a parachute blindfold, launched from that strange plumbing project. 462 00:27:51,000 --> 00:27:59,000 He'll cut the rig loose when it's caught enough air, the main chute deployed by a much smaller one called a drogue. 463 00:27:59,000 --> 00:28:06,000 I'm going to try throwing this out as I drive and see if that launches this parachute for me. 464 00:28:07,000 --> 00:28:13,000 Adam takes off, and short of cutting loose the big chute, the test seems to work. 465 00:28:19,000 --> 00:28:20,000 Ow! 466 00:28:21,000 --> 00:28:23,000 Okay, ow! 467 00:28:23,000 --> 00:28:30,000 The parachute launched and immediately ripped this off the trunk and sent it into my head. 468 00:28:31,000 --> 00:28:36,000 But I like the drogue chute. It seems like a nice quick deploy. 469 00:28:36,000 --> 00:28:43,000 While Adam untangles, Jamie just adds to his arsenal how this one fits in is anyone's guess. 470 00:28:43,000 --> 00:28:45,000 It's still smoking. 471 00:28:45,000 --> 00:28:53,000 But his real party piece is the Auto Stub 3000, installed in a tube welded under the chassis. 472 00:28:53,000 --> 00:29:01,000 When I pull this trigger, the pressurized air that's in this tank goes through the valve, out the bottom of the car and out the barrel. 473 00:29:03,000 --> 00:29:12,000 And so the air from the car has shot this whole assembly out the bottom of this car aimed for the bottom of the neighboring car. 474 00:29:12,000 --> 00:29:14,000 That would be a successful test. 475 00:29:14,000 --> 00:29:19,000 Adam's also been busy customizing his rear end. 476 00:29:19,000 --> 00:29:21,000 Then, just to rattle Jamie's cage. 477 00:29:21,000 --> 00:29:24,000 Yeah, yeah, bring in all the puppies and all the lead. 478 00:29:25,000 --> 00:29:33,000 On that disturbing note, it's time to return to a favorite Mythbusters test track, this abandoned suburb at Fort Orr. 479 00:29:36,000 --> 00:29:37,000 Are you ready for this? 480 00:29:37,000 --> 00:29:38,000 I'm ready. 481 00:29:38,000 --> 00:29:42,000 I want to go first, because I don't think you can handle my technique. 482 00:29:42,000 --> 00:29:43,000 Knock yourself out. 483 00:29:45,000 --> 00:29:47,000 Okay, here's my plan. 484 00:29:47,000 --> 00:29:52,000 Right about here, I'm going to push the launch switch, activating the cannon, setting the drope shoot out behind my car. 485 00:29:52,000 --> 00:29:57,000 At this point, Brian and Jamie are likely to wonder what the hell's going on, and they're likely to back off a little bit. 486 00:29:57,000 --> 00:30:00,000 It'll take the drope shoot a little while to fully inflate the parachute. 487 00:30:00,000 --> 00:30:04,000 Right about here, in fact, at that point, Brian and Jamie are likely to be wondering, 488 00:30:04,000 --> 00:30:07,000 what the hell am I doing slowing myself down with a parachute? 489 00:30:07,000 --> 00:30:13,000 And this is where I activate the final part of my plan, which is to cut the cord that holds the parachute to my car. 490 00:30:13,000 --> 00:30:20,000 They will either A, get entangled in the parachute, or B, figure that because the parachute stopped, I've stopped, and they will stop. 491 00:30:20,000 --> 00:30:29,000 Meanwhile, I will have pulled into my secret hiding place, out of sight of the road, sending them down the wrong road, looking for me in the wrong place. 492 00:30:29,000 --> 00:30:33,000 I think it's a pretty sound plan. I think it'll work. 493 00:30:34,000 --> 00:30:39,000 Let's remember that Jamie hasn't a clue that the plan is to blind him with billows of nylon. 494 00:30:40,000 --> 00:30:42,000 Nothing to see here, folks. 495 00:30:43,000 --> 00:30:45,000 Are you guys ready? 496 00:30:45,000 --> 00:30:46,000 We're all set. 497 00:30:46,000 --> 00:30:49,000 Okay, eat my dust. 498 00:30:50,000 --> 00:30:53,000 Adam takes off like a shell from a shotgun. 499 00:30:53,000 --> 00:30:56,000 Once again, Brian's steering the chase car. 500 00:31:00,000 --> 00:31:03,000 These streets have never seen speeds like these. 501 00:31:05,000 --> 00:31:10,000 You're not going to catch me. I got a secret weapon right here on the desk. 502 00:31:10,000 --> 00:31:13,000 And the shoot is let loose right on the mark. 503 00:31:13,000 --> 00:31:15,000 Here it goes. It's deployed. 504 00:31:15,000 --> 00:31:17,000 Parachutes out. 505 00:31:17,000 --> 00:31:18,000 Oh, and it's away. 506 00:31:18,000 --> 00:31:20,000 Nice try. 507 00:31:20,000 --> 00:31:22,000 But no cigar. 508 00:31:22,000 --> 00:31:24,000 I hope that wasn't all he had. 509 00:31:24,000 --> 00:31:26,000 Well, it was all he had. 510 00:31:26,000 --> 00:31:29,000 The parachute worked, but not well enough. 511 00:31:32,000 --> 00:31:34,000 Ah, it caught me. 512 00:31:35,000 --> 00:31:38,000 Adam's been totally tailed to his secret lair. 513 00:31:38,000 --> 00:31:40,000 Well, shoot. 514 00:31:40,000 --> 00:31:43,000 Well, your device deployed fine. 515 00:31:43,000 --> 00:31:44,000 It deployed beautifully. 516 00:31:44,000 --> 00:31:48,000 I was hoping it would either make you stay too far back or you'd get entangled in it. 517 00:31:48,000 --> 00:31:50,000 I thought it would contest just right. 518 00:31:50,000 --> 00:31:52,000 It might have worked, but it didn't. 519 00:31:53,000 --> 00:31:56,000 Adam admits that it could have gone better. 520 00:31:56,000 --> 00:32:02,000 It might work under certain circumstances, but to be a viable spy-caravasion technique, it really has to work every time. 521 00:32:02,000 --> 00:32:08,000 So I think we've got to relegate the parachute to the dustbin of failed ideas. 522 00:32:08,000 --> 00:32:14,000 Now it's all up to Jamie to press his advantage and take out this head-to-head challenge. 523 00:32:14,000 --> 00:32:18,000 And if his plan comes off, Adam's in for the ride of his life. 524 00:32:18,000 --> 00:32:24,000 Straight ahead, a surprise result in a high-tech three-way machine shootout. 525 00:32:24,000 --> 00:32:26,000 Hurry! 526 00:32:32,000 --> 00:32:38,000 Can an object shot backwards while traveling forwards ever drop straight to the ground? 527 00:32:38,000 --> 00:32:44,000 It's a fascinating thought, but trying to prove it is bringing our physics team unravel. 528 00:32:46,000 --> 00:32:49,000 Okay, either this myth is busted or a methodology's flawed. 529 00:32:49,000 --> 00:32:51,000 I'm pretty sure it's the latter. 530 00:32:51,000 --> 00:32:53,000 Okay, well, there's more than one way to fling a ball. 531 00:32:53,000 --> 00:32:56,000 Let's look into some other propulsion systems and figure out which one's the most reliable. 532 00:32:56,000 --> 00:32:58,000 All right, we could get a ball pitching machine. 533 00:32:58,000 --> 00:33:00,000 They actually make it for soccer balls. 534 00:33:00,000 --> 00:33:02,000 They're pretty accurate. 535 00:33:02,000 --> 00:33:05,000 I've got an idea for another machine where it actually punches the ball without imparting any spin. 536 00:33:05,000 --> 00:33:07,000 That might help. 537 00:33:07,000 --> 00:33:09,000 Okay, let's get started and have a showdown. 538 00:33:09,000 --> 00:33:12,000 It sounds like a plan. 539 00:33:12,000 --> 00:33:18,000 Three machines, including the air cannon, competing to see which is the most consistent shooter. 540 00:33:18,000 --> 00:33:24,000 The soccer ball launcher is designed to reliably fire ball after ball at the same speed, 541 00:33:24,000 --> 00:33:26,000 and it's working just fine. 542 00:33:26,000 --> 00:33:28,000 Oh! 543 00:33:28,000 --> 00:33:30,000 I think you got your aim. 544 00:33:30,000 --> 00:33:32,000 And there's work to be done on the factory floor. 545 00:33:32,000 --> 00:33:38,000 For machine number two, Grant needs to modify a mythbusters favorite. 546 00:33:38,000 --> 00:33:43,000 Now, the last time you saw it, it had a play to fix to the end, and it was smashing frozen heads. 547 00:33:43,000 --> 00:33:46,000 I must say it was a smashing success. 548 00:33:49,000 --> 00:33:53,000 But now it's going to become a soccer ball kicking robot. 549 00:33:53,000 --> 00:33:55,000 Just you wait. 550 00:33:55,000 --> 00:34:00,000 It's a 10 out of 10 for lateral thinking, and you know that when Grant gets his hands on a robot, 551 00:34:00,000 --> 00:34:03,000 it will kick balls. 552 00:34:03,000 --> 00:34:05,000 Okay. 553 00:34:05,000 --> 00:34:10,000 Okay, all of our kicking contraptions should be complete, which is perfect because it's time for the mythbusters World Cup, 554 00:34:10,000 --> 00:34:12,000 also known as calibration tests. 555 00:34:12,000 --> 00:34:14,000 We have our official goal right here. 556 00:34:14,000 --> 00:34:16,000 Back here we have the contenders. 557 00:34:16,000 --> 00:34:18,000 First off, we have the ball checker. 558 00:34:18,000 --> 00:34:21,000 You're already familiar with the air cannon, and finally, we have our robot kicker. 559 00:34:21,000 --> 00:34:24,000 Consistency was a huge problem when we did our last test. 560 00:34:24,000 --> 00:34:26,000 So, that's what we're testing now. 561 00:34:26,000 --> 00:34:30,000 Which one of these contraptions will be the most consistent at 60 miles an hour? 562 00:34:30,000 --> 00:34:33,000 In three, two, one. 563 00:34:34,000 --> 00:34:35,000 Wow. 564 00:34:35,000 --> 00:34:37,000 That was a good kick. 565 00:34:37,000 --> 00:34:38,000 How fast did it go? 566 00:34:38,000 --> 00:34:40,000 58 miles an hour. 567 00:34:40,000 --> 00:34:41,000 Nice. 568 00:34:41,000 --> 00:34:42,000 We're in the ballpark. 569 00:34:43,000 --> 00:34:44,000 The kicking robot was great. 570 00:34:44,000 --> 00:34:46,000 It was consistent within three miles per hour. 571 00:34:46,000 --> 00:34:53,000 Now, moving on to the ball checker, which was actually made to chuck balls, so hopefully this will be consistent. 572 00:34:53,000 --> 00:34:55,000 All right, we're ready to go. 573 00:34:55,000 --> 00:34:58,000 Tori's already fine tuned the speed of the tires, 574 00:34:58,000 --> 00:35:02,000 and from the very first ball, it looks like he's right in the zone. 575 00:35:02,000 --> 00:35:03,000 God! 576 00:35:03,000 --> 00:35:04,000 59. 577 00:35:04,000 --> 00:35:08,000 It's an impressive display from the favor, but there's still one to go. 578 00:35:08,000 --> 00:35:09,000 Nerves. 579 00:35:09,000 --> 00:35:10,000 All right, why don't we do this? 580 00:35:10,000 --> 00:35:12,000 Let's test the air cannon one more time. 581 00:35:12,000 --> 00:35:13,000 Who knows? 582 00:35:13,000 --> 00:35:15,000 Maybe it's more consistent than the other machines. 583 00:35:15,000 --> 00:35:16,000 All right. 584 00:35:17,000 --> 00:35:19,000 Going up to 9 psi. 585 00:35:19,000 --> 00:35:23,000 So it comes down to these last five shots. 586 00:35:23,000 --> 00:35:24,000 Fire away! 587 00:35:31,000 --> 00:35:34,000 The shootout is finished, and the result is a shock to everyone. 588 00:35:34,000 --> 00:35:35,000 You know what? 589 00:35:35,000 --> 00:35:39,000 Out of all the machines, this one looks like it's the most consistent. 590 00:35:39,000 --> 00:35:44,000 Yeah, I think we all know who the winner was, but just for fun, I calculated the standard deviation. 591 00:35:44,000 --> 00:35:46,000 You and I have really different ideas on foot. 592 00:35:46,000 --> 00:35:48,000 He said, um... 593 00:35:48,000 --> 00:35:49,000 Go ahead. 594 00:35:49,000 --> 00:35:52,000 Okay, this one's 1.22. 595 00:35:52,000 --> 00:36:02,000 This one is 2.3, and the winner and still champion, Air Cannon, with 0.84. 596 00:36:02,000 --> 00:36:03,000 Oh, my gosh. 597 00:36:03,000 --> 00:36:06,000 After all that, we have to go back to the air cannon. 598 00:36:06,000 --> 00:36:07,000 Yes. 599 00:36:07,000 --> 00:36:13,000 The ball speeds as close as we're going to get, but let's not forget that's just half the equation. 600 00:36:13,000 --> 00:36:21,000 If the speed going forward is also in doubt, we'd be fools not to fix it, and Carrie's no fool. 601 00:36:21,000 --> 00:36:25,000 So the solution to our speedometer problem is this. 602 00:36:25,000 --> 00:36:26,000 It's a tachometer. 603 00:36:26,000 --> 00:36:31,000 Now what we're going to do is we're going to brace it with all sorts of clamps that I've scavenged from the camera department. 604 00:36:31,000 --> 00:36:34,000 So it's right here against the wheel. 605 00:36:34,000 --> 00:36:39,000 We have some reflective tape that's going to make the laser able to pick up every revolution, 606 00:36:39,000 --> 00:36:43,000 and from there we can do the math, find out exactly how fast our car is going. 607 00:36:43,000 --> 00:36:50,000 Now they've done all they can do to fine tune the hardware, but with cannon reloaded, reverse the results. 608 00:36:50,000 --> 00:36:53,000 Only time mixed with patience... 609 00:36:53,000 --> 00:36:54,000 Nerds! 610 00:36:54,000 --> 00:36:55,000 ...will tell. 611 00:36:55,000 --> 00:37:00,000 And still to come, Jamie unleashes his arsenal of car killers. 612 00:37:00,000 --> 00:37:03,000 We hear this boom, and he takes off. 613 00:37:10,000 --> 00:37:23,000 Tori, Carrie and Grant are struggling to prove the supposedly common sense myth that an object drops straight to the ground when its forward and backward momentum are exactly the same. 614 00:37:23,000 --> 00:37:25,000 So here's where we're at. 615 00:37:25,000 --> 00:37:36,000 Grant's air cannon was precise enough to earn a second shot, but Carrie's replaced a possibly faulty speedometer with an incredibly accurate tachometer. 616 00:37:36,000 --> 00:37:46,000 This is it. We have eliminated all the variables. We have the cannon shooting at 60 miles an hour, the car driving at 60 miles an hour, just to show that this ball will drop straight down. 617 00:37:46,000 --> 00:37:47,000 This is it. 618 00:37:47,000 --> 00:37:48,000 It's go time. 619 00:37:48,000 --> 00:37:49,000 Go! 620 00:37:51,000 --> 00:37:54,000 Look, this is a classic physics thought experiment. 621 00:37:54,000 --> 00:38:02,000 You've got something moving, you fire something off of that moving vehicle at the same speed, and ideally it should cancel out. 622 00:38:02,000 --> 00:38:04,000 But this is the real world. 623 00:38:06,000 --> 00:38:11,000 And the real world remains a frustratingly difficult place to do science. 624 00:38:11,000 --> 00:38:13,000 The cannon was fired a little too soon. 625 00:38:13,000 --> 00:38:17,000 This is all a bit finicky. I think we're going to have to try it a lot until we get it perfect. 626 00:38:17,000 --> 00:38:22,000 More tests only lead to more disappointment. 627 00:38:22,000 --> 00:38:30,000 Once again, Grant's timing is just off the mark, but Carrie at least sees a light at the end of the runway. 628 00:38:30,000 --> 00:38:36,000 I have a feeling that we are very close to a perfect demonstration. We're going to see that ball drop. 629 00:38:36,000 --> 00:38:43,000 With the forward and backward momentum matched as close as they're going to get it, the pressure's on Grant for a perfect release. 630 00:38:45,000 --> 00:38:50,000 I don't know about you guys, but I look pretty good to me. Let's check the high speed. 631 00:38:51,000 --> 00:38:56,000 It really looked good to the naked eye, but the judge in this case is the high speed. 632 00:38:57,000 --> 00:39:02,000 Oh my God, it's like a cartoon. It's just in the air. It stops and it just falls. 633 00:39:02,000 --> 00:39:04,000 Look at that. Fantastic. 634 00:39:04,000 --> 00:39:07,000 I mean, look, it doesn't move at all. It's going straight down. 635 00:39:07,000 --> 00:39:13,000 Woo! We did it! We did it! Yeah! Vector edition! 636 00:39:13,000 --> 00:39:16,000 We canceled that velocity. 637 00:39:16,000 --> 00:39:22,000 After three days of suffering, that single shot brings the myth to an end. 638 00:39:22,000 --> 00:39:30,000 I can't be happier. We actually got the speed of the car to match the speed of the soccer ball, and we got a perfect straight down drop. 639 00:39:30,000 --> 00:39:35,000 Ladies and gentlemen, the laws of physics are still hard at work. 640 00:39:43,000 --> 00:39:48,000 Adam's attempt to escape Janie's spy car came sadly adrift. 641 00:39:48,000 --> 00:39:51,000 Parachute's out! Oh, and it's away! 642 00:39:51,000 --> 00:39:57,000 Things might have gone better with a backup device, and Janie will not make the same mistake. 643 00:39:57,000 --> 00:40:03,000 First up are my tailgater terminators, which are going to deploy out of the back of my car like so. 644 00:40:04,000 --> 00:40:12,000 Notice that I've placed them in a narrow area that the chase car pretty much has to go through, and that means that they have to drive over these things. 645 00:40:12,000 --> 00:40:15,000 Frankly, if they do, I think they're done. 646 00:40:15,000 --> 00:40:17,000 But... 647 00:40:18,000 --> 00:40:24,000 If they're still moving, I go to plan B, which is the side shooter. 648 00:40:24,000 --> 00:40:34,000 Now, this puppy will be shooting out from underneath my car to underneath their car where it opens up, and also will prohibit them from moving forward. 649 00:40:34,000 --> 00:40:42,000 Not to mention the fact that I have a smoke bomb that is going to be set off at the same time just for, well, fun. 650 00:40:42,000 --> 00:40:46,000 Probably just as well, Adam doesn't know what's about to hit him. 651 00:40:46,000 --> 00:40:50,000 Hey, guys. Yeah? See if you can keep up, okay? 652 00:40:50,000 --> 00:40:53,000 Roger that! Secret agent code name Walrus. 653 00:40:53,000 --> 00:40:55,000 Go! 654 00:41:00,000 --> 00:41:05,000 Just a few seconds in, Janie launches the first of his deadly barrages. 655 00:41:05,000 --> 00:41:09,000 He's playing the game. I said puppies. He's throwing puppies out. 656 00:41:09,000 --> 00:41:13,000 Brian heedlessly plows through the pelting of puppies. 657 00:41:13,000 --> 00:41:15,000 And regains lost ground. 658 00:41:15,000 --> 00:41:22,000 But to pull off his serious double deployment, Janie needs to slow way, way down. 659 00:41:24,000 --> 00:41:27,000 Brian has no choice but to take on the spikes. 660 00:41:29,000 --> 00:41:33,000 Only to find he's been set up for the sucker punch. 661 00:41:33,000 --> 00:41:37,000 And then Janie's just looking at us. We hear this, boom! 662 00:41:37,000 --> 00:41:39,000 And he takes off. 663 00:41:40,000 --> 00:41:48,000 And incredibly, Adam and Brian lurch off right behind it, calling enough shrapnel to sink a battleship. 664 00:41:48,000 --> 00:41:50,000 We are on him! 665 00:41:51,000 --> 00:41:55,000 The cars leaking gas and the noise is not healthy. 666 00:41:58,000 --> 00:42:03,000 But they ride Janie's tail for a five minute lap of the desolate streets. 667 00:42:04,000 --> 00:42:09,000 Until their prey makes a bolt for his barrel. 668 00:42:14,000 --> 00:42:16,000 We found him! 669 00:42:20,000 --> 00:42:25,000 You guys are leaking a little bit. I don't know, what do you think? Did I get away or didn't I? 670 00:42:25,000 --> 00:42:30,000 Technically you didn't get away because we saw you turn in here from the road. So we caught you. 671 00:42:30,000 --> 00:42:34,000 If you'd have went any farther we wouldn't have. This thing wasn't running much longer. 672 00:42:34,000 --> 00:42:40,000 One of the spikes is still stuck in the car. And Janie can't fathom how this one turned pear-shaped. 673 00:42:40,000 --> 00:42:45,000 I can't believe they were able to keep going. I mean I thought those spikes were a death trap for that car. 674 00:42:45,000 --> 00:42:47,000 So how are we going to wrap this up? 675 00:42:47,000 --> 00:42:56,000 Well, between the five things that we tested, I think we've definitely proved that stopping a car that's chasing you instantly in its tracks is actually really hard. 676 00:42:56,000 --> 00:43:01,000 Well your parachute might have worked under perfect circumstances, but as it was it was pretty much a bust. 677 00:43:01,000 --> 00:43:07,000 And your spikes, while ultimately I think effective in the long haul, were far from instantaneous. 678 00:43:07,000 --> 00:43:10,000 Something tells me you guys are already cooking up other ideas. 679 00:43:10,000 --> 00:43:11,000 Yeah. 680 00:43:11,000 --> 00:43:12,000 I smell a revisit. 681 00:43:12,000 --> 00:43:14,000 So do I. 682 00:43:14,000 --> 00:43:23,000 One more? 683 00:43:23,000 --> 00:43:27,000 Log on to Discovery.com slash MythBusters. Go!