Thats what happens when one tire slides off the road at 140 miles an hour. The fact that it was an M3 made no difference in whether or not he was going to be going that fast, but it did made the difference between being medivac'ed out and being taken away in a body bag. And your missing the point. 500 HP is 500HP no matter what car you're in. A blown E36 M3 is just as likely to kill you as teh vette posted above. I was just trying to put into perspective what 500HP really is, as well as how little it really takes to do some damage.
For an 18 year old, stick with something like a scion or a V-dub or something.