My dad was welding some holes in the frame of my 1990 Olds Ciera today, and it caught the rear seat on fire. Damage doesn't appear to be too bad, I believe I can take care of most of the damage. Take a look at these pictures. Thank god there was a garden hose nearby.
http://www.a-body.net/showcase/gallery/album01
http://www.a-body.net/showcase/gallery/album01