When going unnoticed isn't on your list of priorities, when you don't care about blending in, go ahead and be a circus. Invite attention. Then use the attention to make a buck or two.
If your 1951 Austin doesn't sufficiently stop crowds on its own merit, add murals and a moose head. For starters. Then put out your donation sign. I dropped a couple of dollars in the pot. A literal pot cradled in the front bumper.