I think it will depend on whether you are actually allowed to drive on the road in an ICE car or that you’ll only be allowed on track, which is a distinct possibility if cars become autonomous. If you were limited to track only then the something track focused like a Porsche GT3RS, Aerial Atom or pretty much any caterham would be a shout. If you are allowed on the road then I think I’d either go for something like a recent more road oriented Porsche or a Lotus Elise (quite like Aston Martin‘s but they don’t drive as well). From a style point of view the it’s hard to beat the Jaguar e-type but if you’ve ever actually driven one you’ll know it’s cramped, noisy (not in a good way) and by modern standards not that fast, though as it has rubbish brakes, that’s probably a good thing. Ultimately it’s very pretty but very old car with cars improving loads in the last 60 years (reliabilty, safety, comfort, ride and handling to name just a few).