Check out THESE NEW PHOTOS of the high-performance model Mustang S550 prototype! This car was headed from Michigan to Carson (LA), California.
The verdict is still out on this model’s name (whether GT350 or GT500), but we’ve posted plenty of references and clues (see here and here) to a GT350 model, so that’s the name we’re placing our bets on.
The last time the GT350 was spotted was in September, in these spy photos/video.