Abstract: Enclosed cargo containers for high mount automotive vehicle carriers and trailers which are designed to transport special vehicles and other cargo so as to be protected from ambient environment and road conditions. The containers may be fixed or removable mounted within the lower support deck of the vehicle trailers and may include one or a plurality of access doors for facilitating the placement of vehicles and other cargo to be transported and which, in one embodiment, may be adjustable in size so as to increase or decrease the storage space therein dependent upon hauling requirements.