I think almost the entire Chevrolet sedan lineup has been in the GT games as is, Malibu included.
Not that I would want to ever try to make a Malibu into something remotely competitive...
Same with Ford and their Classic lineup of cars; pretty much their entire lineup has been in the GT games, including the Taurus SHO (GT2).
(Yeah; remember getting Mark Martin's stock car? I remember that. Pretty cool.)
I'd rather see older cars, like the 1930's Bentleys and Bugattis, that would be awesome to have, and in a game engine that doesn't fall flat like unlike how World of Speed did...