Abstract: The vehicle has propulsion generated to the stretching or the contraction of the limbs that push or drag the seat (3) placed on a slide (15) onto guides (16) in one way or in the other. The push is given with the limbs onto the toe-clip device (19) and onto the driving device (20) whereas the traction is actuated dragging the seat (3) with the belt (18). A mechanism (1) is then provided having a connecting rod (2) connected with the seat (3) and with a plate (7) integral with a crown wheel (9) connected by a chain (10) to a sprocket-wheel (11) equipped with a free wheel device (12) and transmitting the motion to the back driving wheels so as to determine the moving of the vehicle.