-trunk/hatch is pointless because about 90% of the weight is in the window
-hood is the only one that gives the car that "clean" look
-you can TECHNICALLY have the car body molded with carbon fiber and literally have every piece of the body made into carbon fiber... but that would ruin the cars durability/rigidity :shrug: .. and just imagine how much a fender bender would cost

all in all it's not worth it... just my .02