Holy crap, that is some insane crashing. As much as I enjoyed watching, it reminded me too much of my Uncle's crash in England while he was going down the drag strip. I have a picture of the car just before it started to go all crazy, here it is:
I think this is what happens when the nitrous he was running, had to find a way out of the engine before the entire car blew, the good thing is that he came out of the crash with minor scrapes and cuts.
But getting back on track, that was crazy in the first MotoCross section how the bike practically landed on the riders head.
that was definately insane