If I had the money I would buy it, and I would DRIVE it. Sure, I wouldn't "push it to it's full potential on the track every weekend", but I would definitely make use of owning an exotic. As for owning it purely for the performance, I can't say that would be the reason to buy it. It's just the sheer passion, the feeling that you get from these cars that would inspire me to buy one. I mean, I could buy a race-spec RX-7 or something to take to the track and race around with, but I would take the Ferrari any day.
