Saw this link on another forum. Pretty harrowing and there is one very touching scene of a driver trying to help his friend from the burning wreckage to no avail. Not for the faint hearted this video. It's quite graphic but it's a must see, not in a morbid fascination sense, but as a reminder of how much the sport has moved on in terms of safety. The same is to some extent true of bike racing too. Still, make of it what you will.
http://www.youtube.com/watch?v=9SIM3BB-Yx0