A system for loading and transporting wheeled vehicles on a transporting vehicle, such as a ship or rail car, comprises supporting a plurality of wheeled vehicles on each of a plurality of frames in vertically-spaced relation to each other and then inserting the respective frames and their supported vehicles matingly into respective enclosures. The enclosures, with their frames and vehicles inside, are loaded onto the transporting vehicle by compactly stacking the enclosures one atop the other in weather-exposed positions, the enclosures nevertheless serving to protect the vehicles from external hazards.