Two cars for me. Race car, and commuter box.
Can't really only have one car while I own a race car, because driving a car daily with full harness' and a rollcage gives me psychotic episodes (as well as the obvious theft target risk of using such a car daily). I did drive the race car every day for a week (can't recall why, but there was some reason for it) and it made easy tasks difficult by inability to reverse with harness' on, as well as how annoying it was to climb over a door intrusion, and then adjust the shoulder straps every time I sat in the car.