OK, I'll hop on the bandwagon. 2010 Porsche 911 SC

My mom's then-new 1986 Volvo 245. Beige exterior, brown leather interior, and manual everything. I remember sitting in the driveway, pretending to steer and row through the gears. Hell of a car.

Ken Imhoff's basement-Countach, 351 Cleveland and all. Extremely doubtful, but I'd love to see how it drives.

@mclaren: Damn. That's already in the game, too.

Pontiac G8 GXP

Shelby GT500E "Eleanor"

Gotta go with Opel GT.