for use with supplemental tailgate on pick up trucks u201d now u s pat no ______ granted on ______ the contents of which are incorporated herein in its entirety by reference the pick up truck is conventionally manufactured with a cargo bed forming the rearward portion of the vehicle the cargo bed generally includes generally vertical upright side walls having a floor member extending generally horizontally therebetween the tailgate assembly 10 extends transversely above the floor between the side walls at the rearwardmost portion of the cargo bed the tailgate assembly 10 is pivotally mounted at the floor of the cargo bed and is movable between an upright closed position that is oriented perpendicularly to the floor and a lowered open position that forms an extension of the floor rearwardly of the side walls a supplemental tailgate apparatus 20 of the type shown and described in u s pat no 6 918 624 can be stored within the interior of the tailgate assembly 10 until deployed with the tailgate assembly 10 lowered into the open position and the supplemental tailgate apparatus 20 oriented generally vertically to serve as a substitute tailgate while the top surface of the lowered tailgate assembly 10 serves as an extension of the cargo bed the supplemental tailgate apparatus 20 is also pivotally movable into a lowered position such that the cross member 22 is lower than the main tailgate structure as is disclosed in the aforementioned u s pat no 6 918 624 the cross member 22 can also incorporate a flip.