ELI5: Explain Like I'm 5

Friction drive

Friction drive is a way to turn the wheels of a vehicle. It works by using a flat surface called a friction plate, which is made of rubber, and two metal pieces called gear teeth. The gear teeth and the friction plate move against each other when the vehicle moves. As the rubber and metal pieces move together, they create friction, which is what moves the wheels. The more friction that is created, the more the vehicle will move.