The new C7 is amazing. I still can't beleive GM can put that much technology into a $60k car. GM uses magnesium to mount the interior panels and the floor pan is epoxy bonded carbon fiber to the aluminum frame rails.
I can't wait for the new ZR1 its going to make some very expensive European metal and carbon fiber...cry.
If you option out the current C6 correctly it stickers for about $93k and is made mostly of carbon fiber, with carbon brakes, etc. It's also good for a 7.22 around the ring...
The old fiberglass jokes don't really work anymore because...their really isn't any.