Abstract: A self-propelled trailer is provided and includes a frame, an extension device, and a storage bin. The extension device includes a first extension section with a trailing end rotatably connected to the frame and an extendable second extension section rotatably connected to a leading end of the first extension section. The storage bin is secured to the extension device.

Abstract: A self-propelled trailer is provided and includes a frame, a pair of rear drive wheels, a steerable wheel, a drive system, a platform, and a lifting device. The pair of rear drive wheels are positioned under the frame along one end thereof, while the steerable wheel is positioned under the frame along an opposite end thereof with respect to the pair of rear drive wheels. The drive system includes a power system connected to the pair of rear drive wheels and a control system connected to the steerable wheel. The platform is positioned above the frame, while the lifting device is positioned between the steerable wheels and the pair of rear wheels. The platform includes a crane extending upward from the frame.