A human powered vehicle with four unpowered wheels. Front and rear wheel bearing sections are joined by a top frame structure. A swing suspended from the frame structure supports a driving rider in either a prone or a sitting position. In the prone position, the rider is oriented, heard first, along the axis of travel, and positioned beneath the frame structure. The vehicle has a steering mechanism and a braking system, both situated to be operative by the rider when the rider is positioned to be in any of a standing, sitting or prone position.