These are the same as the fleamarkets --like the Berkeley Fleamarket, the Alameda Pennymarket, etc--where you pay a fee to pull your car or other vehicle into a parking place and lay out your stuff--

I actually met my guitar mentor, Uncle Albert, at his booth in the Berkeley Flea market--he always had a bunch of guitars, and people were always playing--he usually sold enough stuff to get through the next week and made music contacts, got jobs, and generally had a good time.