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 and/or ceiling, and which are turned on and off remotely by an operator. Bumper cars were not intended to be bumped, hence the original name "Dodgem." They are also known as bumping cars, dodging cars and dashing cars.There are a few different types of bumper cars, but all of them run on electricity. The old, classic style of bumper cars had poles that attached to the back of the car, running electricity down a wire to the car. Other types of bumper cars use an electric floor that activates the car s through a simple circuit system under the cars. However, many bumper cars now use rechargeable batteries, without the need for electricity on the floor or through connecting wires or poles. There are 3 different types of bumper cars：Sky grid bumper cars, Ground grid bumper cars,Battery Powered bumper cars