Being an American at heart, I fall hard for the American Muscle. My first choice would be the Corvette; one of the sexiest cars ever to have been produced. A true American classic. I fell in love with this one when I saw it's predecessor; the C5. Prior to that, I had never even seen a Corvette. This one really rocked my world. But living in Malaysia for most of my life has left it's mark so not all the cars here are American.
The '67 Ford Mustang Fastback is simply drop-dead-gorgeous. What I wouldn't give to try and tame that Mustang.
*Sigh*. If only eh? If I had to pick one and one only, I'd choose the Corvette in a heartbeat. The rest are -- unfortunately -- not in order of preference. Only the Corvette. Sorry.