Abstract: The present invention provides an adjustable airfoil mountable to a vehicle and movable from a first position to a second position. The invention further includes an actuator device coupled to the adjustable airfoil to selectively move the airfoil from the first position to the second position and operatively coupled to a vehicle brake system so that the actuator device is able to receive a signal pertaining to operation of the vehicle brake system, wherein the actuator device moves the adjustable airfoil as a function of the signal. In an embodiment of the present invention, the adjustable airfoil further comprises a remote control device operably coupled to the actuator to provided a second signal, wherein the actuator device also moves the adjustable airfoil as a function of the second signal. In another embodiment, a method is disclosed for operating an adjustable airfoil as just described.