Well, I guess he'll offer you one sooner or later then. I know I would if I were the owner and knew someone who's mad about supercars like this. I can understand your reluctance to ask, I'd probably have the same.
Look at it this way: now you had a great day just sitting in it and maybe another great day in the future getting a ride in it. If you got a ride yesterday already you would have one great day. The ride would probably push the 'sitting' part to the background, now you can savour it.
