It's a new electric motor called the Donut Motor that promises ... as well as slashing the number of parts used and the complexity of the system. An in-motor wheel will also help the traction ...

Conventional electric motors come in many types ... strength of the electric field and insulate the motor’s spinning parts ...

in that it has an electric motor and a source of electric power. However, [Tom] intended to eliminate the electronic parts—the speed controller, any battery balancing hardware, and the like.