Insert for at least supported driving of a commercial vehicle and/or a commercial vehicle trailer

The trailer (1) has two wheels (2), an electric drive device, and an energy storage device for drive device. The coupling elements (4a,4b) are arranged for connecting the trailer to a vehicle. The drive device is arranged for driving the wheel and the support structures (5a, 5b) are designed to receive the vehicle weight. The drive device is provided with an interface for driving a wheel axle of vehicle. An independent claim is included for a vehicle.