It would be a brand new Chevrolet Corvette.
I have had several Corvettes and I chose them over Porsche. I couldn't afford a Ferrari, but I wouldn't have bought one even here answering your question.
The Corvette is America, that and the Mustang are the only survivors of how great was the American Auto Industry. BTW, I think Ford with their Mustang is much like Porsche, they just want to look like their classic version. While, Corvette has had 7 significant changes.
With one of my Corvettes, I was getting 30mpg at 120 mph. It was a 4 over 3 manual shift with overdrive. 2200 rpm at that speed in overdrive.