so i was reading the thread on the guy that wanted to put a 240d engine in an 300sd for better mileage, and it got me to thinking. what if someone where to take a 240d, remove the fenders, hood, truck lid, and the rear quarter panels and make a set of each of these from carbon fiber or fiberglass? i know this is far fetched and the amount of money required to do so would be economically unfeasable but, if this where to be done how much of an increase do you think there would be in fuel mileage/performance?