The present invention provides a man-driven vehicle equipped with a cover structure practically covering a whole of the vehicle wherein the cover structure is provided with an openable and closable door way substantially comprising a door, a detachable cover, a rotatable cover, and a slide cover cooperating one with another so as to facilitate a driver to get on or off the vehicle. The cover structure additionally comprises a ground contacting skirt and a floor panel so that the vehicle can be comfortably driven even in adverse weather with the cover structure closed and, particularly in fine weather, the vehicle also can be driven with the cover structure opened.