I had an experience like that once. I was on the interstate and this car was smashed by a big rig. Driving by I could see the mangled body in the drivers seat.

The disturbing thing was I had my camera ready to take a picture of "the cool accident." I didn't once I saw the body, but I was really disgusted with my self for a few days afterwards... Now that I think about it now I'm getting a little sick in the stomach.