Abstract: The system and the method of providing an efficient human powered vehicle by means of using levers that transmit the force produced on them to a rotational mechanism making move one or more wheels to the driving wheels of an bicycle, tricycle or vehicle where the rotational mechanism might be enclosed inside a negative pressure chamber containing one or more multiplying gears in communication to an electricity generator which provides power to batteries which provide power to the engine that moves the vehicle which is equivalent to transforming the our biological force into mechanical force then into electrical and finally into movement.