Abstract: A vehicle with an adjustable roof for providing a vehicle with enhanced capacity by permitting adjustment of the position of the roof of the vehicle. The vehicle with an adjustable roof includes an enhanced transport vehicle system, which comprises a vehicle having a front and a rear. The vehicle has a body including a cab portion located toward the front of the vehicle. The cab portion has a roof section. The body also includes a cargo portion extending rearwardly from the cab portion. The cargo portion has a floor and a pair of laterally spaced side walls extending upwardly in a substantially perpendicular orientation to the floor. The floor has a rear end, and the cargo portion has a roof section extending rearwardly from the roof section of the cab portion to a rear edge of the roof section. The side walls have upper edges extending substantially parallel to each other, and the upper edge of the side walls extend rearwardly from the rear edge of the roof section of the cargo portion.