rumble seat hot rod

A rumble seat (American English), dicky (dickie/dickey) seat (British English), also called a mother-in-law seat, is an upholstered exterior seat which folded into the rear of a coach, carriage, or early motorcar. Depending on its configuration, it provided exposed seating for one or two passengers. You don’t see a whole lot of them in hot rods these days, but this shot is proof that they are indeed out there!