This stuff is pretty much indestructable. My bro in law owns a sign shop, and he had some there. For laughs he told me to try and break a smaller piece that he had. Can't be done!!! I tried a sledge hammer, a HUGE beater bar, folding it, driving over it folded. Nothing happend to it other than some scratches, and a white crease where i folded it. It was really cool to play around with. He even has this catalog that showed the effects of different gun shots to a 1" thick piece. Only one that made it all the way through was a solid slug from a 12 guage. I've heard that that is what the canopy of an f-16 is made from. I wonder why they don't use this stuff in vehicles now? Price? Scratch prone? At any rate, it would be cool to see it on a rig.