Abstract: An implement supporting vehicle comprises an elongate implement support frame, along one side of which two drive units which propel the vehicle are mounted equidistance from the center of the vehicle. Two castor wheels are mounted along the other side of the frame. The drive units are moveable between a first working direction in which the vehicle can be propelled in a first direction transverse to the longitudinal extent of the frame and a second transport direction in which the vehicle can be propelled in a direction substantially perpendicular to the first direction. A moveable operators cabin is mounted with the frame.