One of my distant distant relatives fell asleep at the wheel after working 3rd shift, which was out of the norm for her, and hit a big truck (ie logging truck, tractor trailer, something along those lines) head on. It was a v6 stang, and it was a mangled mess. Broke her leg, I think done something to her skull, and maybe broke her arm. Nothing left of the car. I don't see how anyone couldn't have died from that accident. If I find the pics my cousin posted on another forum I'll link em up.
EDIT: Heres the quote my cousin posted, he knew more about it:
My cousin was in a wreck in her Mustang at the end of May. She is just now getting to where she can start walking again. These pics are some of the worst wreck pics I have ever seen where someone was not killed. She fell asleep and hit a tractor trailer head on on her way home from work 3rd shift as a nurse.