I did use auto safety glass on Nemesis when I first got her 12 years ago. At that time, I took the original plexi pieces to my local auto glass shop, and they turned out 4 perfect, slightly tinted safety glass pieces for $7.00 each. (1997) I just calked them into place with Life Calk. Last year I renewed the seals by cuting away what I could of the life caulk and pushed them out from the inside. The glass cleaned up easilly to like new condition with a razor and acetone, and I cut out the rest of the Life Calk from the frames with the razor. Then I simply reinstalled the same glass the same way. I couldn't be happier with them.
Mark