Bumper cars or dodgems are the generic names for a type of flat amusement ride consisting of multiple small electrically powered cars which draw power from the floor or ceiling, and which are turned on and off remotely by an operator. They are also known as bumping cars, dodging cars and dashing cars. The first patent for them was filed in 1921.[1]
^Burton, Anthony (2000). Traction Engines Two Centuries of Steam Power. Silverdale Books. pp. 105–106. ISBN1856055337.