Meet the Buffalo Cart: an electric powered cart system that lets you pull up to 500lbs of load a whole lot easier in the outdoors. It is available in 4 models (flatbed, wagon, commercial, hunting). It runs for up to 5 hours on battery depending on load.
Buffalo Carts can attach to the back of vehicles with a class III 2-inch hitch. You can customize yours with LED front lights, side railings, cup holders, cargo straps, and a whole lot more. You also get a USB charging port.