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Check this out...
Joey Hand, #21 BMW M3 in Grand American Rolex Sports Car Series at Ohio on 24th June 2006.
You don't see it on the clip but later on he crawls out of the car but the guys on the scene have to pick him up and move him because of leaking fuel, which is quickly dampened down, exactly where he'd crawled out to.
I hope I never have to do that!
They took him to hospital but I don't know how he is now. He did crawl out so obviously wasn't too bad.