The ground-grid bumper car is driven by a DC motor, and the AC power is converted by the control device. The DC plate is sent by the electrode plate to the motor of the bumper car, and the wheel is driven by the speed reduction mechanism. The bumper car is freely driven by the passengers. The pedal switch is used to control the driving and parking. The steering wheel is rotated to control the driving direction. Because the vehicle has a buffer (tire), it can be arbitrarily collided. The game process is safe, reliable, and competitive. The concept and the experience of self-driving are extremely attractive to visitors.