Pulling a trailer isn't always easy, but it's far less stressful than parking one. That's where Trailer Valet RVR comes in. This remote-controlled assistant is powered by either two or four planetary gear motors capable of driving both single and double axle trailers from distances up to 40 feet away. Industrial-style caterpillar treads provide traction in a variety of terrain, including asphalt, gravel, grass, and dirt. Available in three models, the RVR3 can handle up to 3,500 lbs and includes a mounting bracket for attachment to the trailer frame, while the RVR5 and RVR9 include a base + ball set that hooks to a trailer coupler via interchangeable 2- and 2 5/16-inch hitch balls and can accommodate trailers weighing up to 5,500 and 9,000 lbs, respectively.