To be fair and because I don't want to be known as a one dimensional offender.
GM: General Mistake
GMC: Garage Man's Companion
GMC: Generally Mediocre Cars
GMC: Get More Chicks
GMC: Got More Crap
GMC: Grungy Merchandise
GMC: Got Mechanic Coming


As to the Ford GT...well, if I owned one I'm sure I would be looking in the rear view mirror a lot more than I already do now.