WheelTug is a privately traded company incorporated in Gibraltar in February 2005 holding patents for and doing research intended to produce a ground propulsion system for aircraft. The patents and advertising describe placing a high torque electric motor into each of the nose wheels hubs intended to allow for backwards movement without the use of pushback tugs, to allow for forward movement without using the aircraft's engines, and to allow for rotation of the aircraft at the gate. According to the Wheeltug website, by rotating the aircraft at the gate using WheelTug, both the front and rear door of the aircraft could potentially be used at a specially equipped gate to speed boarding.