Meet the Trailer Valet RVR12: a remote controlled robot that can move trailers, RVs, and boats. It can move up to 12000lbs of load. It uses 2 ultra high torque electric AC brushless motors to get the job done. This RV mover comes with a transmitter with 40ft range. It has push-button arrows for easy controls. Brakes are applied when you are not pressing a button.
The RVR12 runs on a 29.2 volt LiFePO4 battery for up to 30 minutes. It has a max speed of 120ft per minute. You can find out more about it here.