Jay explores some of the world's toughest vehicles. First, he takes comedian Kevin Hart on a near-deadly ride in one of the most outrageous off-road vehicles in the world. Then he puts storm-chaser Reed Timmer's "Dominator" storm-proof vehicle to the test against a jet airplane. He also meets some of the toughest drivers in the world - injured veterans who use high-speed racing as rehabilitation. Finally, Jay pushes the world's fastest armored car, and himself, to the limit in a wild chase where the bad guys use real bullets.