Fuente: WIPO "wine" The invention comprises an improvement in pickup truck tailgates and the mechanism for operating such tailgates which allows the tailgate to be operated from essentially a conventional closed vertical position to a plurality of other positions which may provide negative lift to the rear of the pickup truck vehicle or minimize the drag coefficient of the vehicle. This is accomplished with a mechanism which allows the tailgate to be carried substantially inside of the pickup truck bed enclosure with air flow over the tailgate and between the tailgate and the floor of the pickup truck bed. The angle between the tailgate and the truck bed is adjustable to provide desired lift and drag minimization functions.