Be ready for an avalanche of proposals and concepts motorcycles claiming to resolve what some are claiming is the number one priority on our planet ! Here is one of them with explanations by it’s “inventor” that I let you debate.
He explains that “The rear wheel has permanent magnets embedded in it. The wheel is then attached to a large ball bearing ring similar to that of a skateboard but much larger and much stronger. The outer part of the ring is attached to the swing arm. The other side of the swing arm supports the wires that the direct current passes through. That causes the wheel with the magnets to spin in the direction of the current. In theory this propulsion method should be very efficient if you can control the amount of current going through the wires and assuming you have a great battery pack.” There is also a mini gas generator that charges the batteries but only turns itself on at low speeds.