I found a sequence of photos showing in detail Stan Fox's mind-boggling crash at the first turn of the '95 Indy 500 at a speed in excess of 200mph. Apparently he did suffer some head injuries from the initial impact with the wall, but astonishingly the only injury to his legs was a bruised heel!
He later made a full recovery and returned to racing, though sadly he lost his life in a road car accident a few years ago I believe.
Makes you wonder about the safety levels back then. The cars don't look too disimilar to today's Indy cars yet you'd have to think/hope that that kind of destruction to the front of a car wouldn't be possible these days.
I think the fact that his feet landed on the rear wing of the other car helped him out a lot, if they hadn't then the car probably would've rotated further and he would've landed feet first onto the tarmac!