Apparatus are provided which utilize the tailgate of a vehicle, such as a pick-up truck, to create an aerodynamic windspoiler for the vehicle. In one form, the apparatus includes a housing is pivotally attached to the vehicle, and a rod having a first end supported within the housing and a second end attached to the tailgate, wherein the rod is capable of being slidably extended and retracted from the housing. Ideally, the positioning of the rod relative to the housing is controlled relative to the speed of the vehicle to adjust the inclination of the tailgate. This may be accomplished utilizing either an electrically driven motor or an hydraulic cylinder. In another form, the apparatus includes a rotatable shaft attached to a sheet of stretch resistant material. Upon extending and attaching the sheet of material to the tailgate, a windspoil is created.