When you′re riding a roller coaster, it can feel like at any minute the car is going to rip off the tracks and send you flying into the air. It seems impossible that so much speed and force can be controlled by the slim, twisting steel or spindly, creaking wood of a roller coaster. Of course, there is a very specific reason just why it is possible: they were designed and built that way. In this episode I meet the people responsible for engineering and constructing two very different, but equally thrilling roller coasters. One, the Griffon, is a looping steel coaster where workers climb to dizzying heights to build the ride. The other, the Renegade, is a wooden behemoth constructed in the life-threateningly cold winter of Michigan. That′s all pretty exciting. But to be honest, the best part of this episode was the fact that I got to spend three days going on all the rides at Busch Gardens and call it "work."