It looks like a Triumph GT6R. Though, it's neither an american car, nor a special. It has a hole in the bonnet, which wasn't there in an original model, so it means that some significant engine modification had been done, or even an engine swap...
I hadn't found any photo of an GT6R with engine swapped, however, i probably found an answer. It's Sammio Alpha A1, a body replacement kit for a GT6, although it also may fit a similar dimensioned car. I guess, it's wrapped around an Triumph GT6 ( let it be mk 3) or a Spitfire.