Abstract: A cargo loading and unloading system mounts to a vehicle's flat surface and is contained within the vehicle's constraints. The system includes a rolling platform attached to a tilting frame, which in turn pivots on top of a sliding extension frame, which in turn extends from a base frame. The extension frame is pushed toward the vehicle's rear. As the extension frame moves rearward, a tilt initiator lifts one end of the tilting frame from the flat surface, initiating tilting. The tilting frame continues to pivot upward about the vehicle's rear. The cargo platform rolls out or down to a loading or unloading surface. Once cargo is loaded or unloaded, the platform is raised back onto the tilting frame. The tilting frame pivots downwards towards the flat surface and lands on the extension frame. The extension frame is pulled back into the base frame.