Did any of the rest of you see the TV show with footage of the guy who tried to set a bicycle speed record by going down the side of a volcano? He first went down on a conventional mountain bike, to feel out the run. Then he got on his very high-tech custom bike and "went for it". Fortunately, he was padded up til he looked like a mountain gorilla. He got up to some hellacious speed, and the bike just disintegrated. Seeing him bouncing and pinwheeling down the slope like a rag doll, it was incredible to think he survived. As it was, he said that he was pretty much fully recovered by three years afterward. He is NOT planning on another attempt.