[Excaliber]

One of the problems with a light weight glass body would be durability issues. Spider lines in the paint from stress for example. Shakes, vibration, twisting issues would be more evident, cracking easier on light impact.

Recently had a chance to compare the thickness of a Classic Roadster to an FFR, whew, it's night and day when it comes to structural integrity. Of course the penalty for the C.R. is a weight gain. There is no free lunch.