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Underwater Car Escape. This is one of the coolest myths ever tested on the show, just because it is involves live action - that is, actually doing something, and it doesn't involve Buster (who has been conspicuously absent lately). But in it, Adam is given the rather unsettling duty of "driving" a car as it takes a dive in a pool, to see if it is really true that you can't open the door until the car fills up inside, so that the pressure equalizes.

Of course, precautions are taken - there are safety divers all around the pool, and Jamie is in the backseat, just in case he's needed. So with everything ready, a car is acquired and stripped of oils and such that will foul the pool (since it is actually in use). Then weight is added back to mimic the weight that was removed by the engine being ripped out, the car is loaded onto a crane, and Adam is unceremoniously lowered into the pool.

On the first dunking (oh yes, there was more than one), he really lost it. As the water inside the passenger compartment rose rapidly, he found that the first foe of someone who ends up in the drink is that you're going to be worried about the water that is coming up around you. You aren't too worried about the door - you're worried about getting a breath of air. Panic sets in. By the time the water was high enough that he could open the door, he simply didn't have any left. Confirmed.

So while it is indeed true that you need to wait for the pressure to equalize on the inside of the car in order to open the door, that's not the end of this myth. Not by a long shot. Adam was ready for some more dips in the pool. He had to overcome the image that he had just set on television for everyone. So with that, he was lowered again, and tried to open the door just as the car landed in the water. And he was able to do so. So it seems that if you get the door open before it gets too low in the water, you may be able to get out.

Next up, to see if you can open the window if the water gets a little deeper. By this time, Adam's getting a little braver, so he lets the water creep up his legs a bit further, and though he nearly gets his fingers chopped off by putting them on the window sill and pushing against the door with his back, he does get out - but it's a close one. So you actually don't have to push right as you hit the water.

Adam wants to see if he can wait a bit longer, but this time the outside pressure is just too much, and he can't get out. But he does fee like he's overcoming his fear, and decides that he will take the Zen approach. So when he hits the water, he just sits calmly. When the car hits the bottom of the pool, he opens the door and slides out, as cool as can be. It seems that this might be the best approach of all. Of course, if you really crashed into the water, you might not have the advantage of safety divers and crystal clear water, so perhaps you should go for one of the first options...

Also tested were methods for getting out the window, and it turns out that rolling down the window really isn't an option. The manual crank just strips the gears, and even though the power windows continue to work, the pressure is just too much. However, breaking it out could work - but hitting it with your fist, cell phone or even kicking it didn't work. Using a hammer or a spring-loaded device could do the trick - provided you can find it in time.

7 Paper Fold. This myth is an interesting one, as it says that a "piece of paper" cannot be folded more than 7 times. This really comes down to how you define a piece of paper. There is, for instance, a girl in California who folded a long piece of what is essentially toilet paper 12 times. But if you take a sheet of notebook paper, changes are you are unlikely to be able to fold it more than 7 times, because each time you do, it gets twice as thick. It makes it hard to do.

So naturally, the challenge is to see if they can do it. Gathering up several rolls of very thin paper, Grant, Kari and Tory lay out a massive "sheet" of paper (frankly, I think this is cheating) and proceed to "fold" it. What do you know? They do it. But it wasn't with one sheet. Busted. But draw your own conclusions as to whether this really counts (or not).