These battery powered bumper cars are available in sets of 4 or 6! Our inflatable arenas makes this a fun and safe addition to any carnival or festival themed event. The cars are battery powered, so they can run indoor or out on just about any flat surface! Call us to ask about the different colors that are in stock for your party. 35’L x 35’W x 4’H (or) 35’L x 45’W x 4’H / set to fit – 20 amps req for inflatable arena.