A vehicle trailer system for loading, transporting and unloading a load includes a trailer front structure for attachment to a towing vehicle; a pivotable structure pivotally coupled to the trailer front structure and including a transversely-movable structure for a load to slide or roll thereupon. An actuator allows causing transverse movement of the transversely-movable structure relative to a main body of the pivotable structure. A carriage mounted for bidirectional travel on the main body of the pivotable structure, the carriage including a carriage hitch for pivotably coupling a load. The transversely-movable structure in combination with the pivotably coupling carriage hitch allow correcting virtually any misalignments between the cargo container and the trailer, and clearing virtually any obstacle, in such a way that cargo containers will be able to be loaded and unloaded by small vehicles and in practically any location.