Drive distance_mm

def on_for_distance(self, speed, distance_mm, brake=True, block=True):
        """
        Drive distance_mm
        """
        rotations = distance_mm / self.wheel.circumference_mm
        log.debug("%s: on_for_rotations distance_mm %s, rotations %s, speed %s" % (self, distance_mm, rotations, speed))

        MoveTank.on_for_rotations(self, speed, speed, rotations, brake, block)