AERODYNAMIC DEVICES FOR VEHICLES, NAMELY, ATTACHABLE WIND DEFLECTORS, PERMANENT WIND DEFLECTORS, SELECTIVELY DEPLOYABLE WIND DEFLECTORS, SPOILERS, WIND DEFLECTORS DESIGNED TO DEFLECT THE RELATIVE WIND IMPINGING UPON THE TAILGATE OF A PICKUP TRUCK, VEHICLE RELATIVE WIND DEFLECTORS TO SAVE FUEL, AND OTHER DEFLECTORS DESIGNED TO DEFLECT THE RELATIVE WIND CREATED BY THE FORWARD MOVEMENT OF A VEHICLE