Much as I do agree with everyone talking about public transport here on an actual sensible and rational level, I do still like cars and driving no matter how much I agree that the world would be a better place were they rendered irrelevant.
So in the spirit of the question: the Morgan Supersport. It looks magnificent, Morgans are supposed to be great to drive, it's quite small and still fairly luxurious, it's pretty fast but not so fast that it becomes functionally unusable on actual roads, and the company still describes itself as a coachbuilder so you can tweak every little detail to your pleasing