I am a lot into the oldtimers, no car looks more pimp than an old 63 Buick Riviera:
This one is just messed with some tuning.
Otherwise my all time favourites are:
The 58' corvette:
Ferrari Dino 246:
Mustang Fastback (well that ain't too original but it has such an ingenious shapes):
Or any of the old mercedes coupe models, like 230 SL :
The most vicious car I know is then this Holden concept car:
