In order: '56 Plymouth (forgot the model), '61 Oldsmobile 88, '68 MG Midget, '70 1/2 Camaro, '70 GMC 1500 (kept it for 18-years) '71 Datsun 240Z, '71 MG Midget, '74 Datsun 260Z, '95 F-150 (have had it for 25-years), '95 Nissan 200SX (that eventually became our oldest granddaughter's 18th birthday present) and currently my wife's '10 Ford Escape.
The Plymouth and Oldsmobile were high school and pre-Vietnam, so very short-lived. As can be seen, I much prefer foreign sports cars and really miss the ones I've owned. Two cars I'd like to own, but never will, are a Ferrari 250 GTO (the original reason for, and meaning of, the term) ((the last one sold fetched $70-million)), and an original 427 AC Cobra. Though the inclination to do a restoration is mostly lacking, it would be a Bugeye Sprite though a restored one would be acceptable.
Oh, wait, there's the Lamborghini Miura, Ferrari Testa Rosa (the original version), Ferrari 240 Dino, Morgan 3-wheeler, MGA, Lotus 7/Super 7, Datsun 510 station wagon . . .
If my arm were to be twisted till I cried uncle for an American car, I wouldn't be able to think of one and my arm would snap.