Good question. As far as performance goes, I don't think there's anywhere to go now. Pretty much any production car in the upper-bracket (I'm thinking Audi RS, BMW M, Mercedes AMG type stuff) can deliver performance which is far in excess of the capabilities of pretty much any driver, and certainly beyond the capacity of pretty much any public road.
So what's left? Super luxury? But then you end up with the kind of nonsense you see parked outside the Dorchester or Harrods. Not fr me, thanks very much.
Technology? There's certainly an appeal there for me, but cars in this category are more about the software than the engineering, I think.
Old stuff? That's where the money seems to be heading at the moment, but the problem is that buying an old car as an investment vehicle (no pun intended) more or less precludes it from actually being used. Plus of course they often aren't actually that brilliant to drive
For me, the last bastion of truly special cars is in hand-built one-offs: things like the recreations by Lynx, or the work of Bob Petersen. If I had a cartload of money to spend on a car that wasn't an Aero Supersport I think I'd be looking at a Beacham Jaguar.
