The vintage look seems to be gaining a lot of momentum lately. (click the link below).
I really like that look. Maybe a shirt like the one in the link, with one or two of your past cars. A vintage midget and Indy car maybe? Fitted hats are cool, but pricey to have made, unless you expect to sell a zillion of 'em.
Regardless, can't wait to see what you come up with. The vintage photos on your website are awesome.
David.

http://store.indianapolismotorspeedw...t=0&display=18