A couple, I think, different ideas, and one that’s already mentioned:
1937 Delahaye 135 M and/or
1938 Delahaye 165 Cabriolet: absolutely stunning cars, beautiful renditions of art on wheels.
2004 Chrysler ME-412
2006 Chevy Cobalt SS: I love this one, similar to NFS Most Wanted. It was just a starter car in that game, but the handling and tuning allowed me to almost beat the whole game with just this car.
Edit: Just learned about this beauty, I don’t recall ever seeing it in-game before:
1957 Škoda 1100 OHC
Thank you