U-Haul's rental fleet is composed of trucks, trailers, auto-transports, and various other equipment. Heavy duty pickup truck and van cabs manufactured by GMC, Dodge and Ford are mated with U-Haul manufactured truck boxes in fabrication plants located at various places in North America. The vehicles are all gas powered, with previous models offering diesel 17-foot (5. 2 m) trucks that must be brought back to the same location where they were rented. Six truck sizes are available, ranging from 10 feet (3. 0 m) to 26 feet (7. 9 m), and multiple trailer sizes, in addition to a two-wheeled "Tow Dolly" and a four-wheeled "Auto Transport". U-Haul advertises that their trucks have lower decks which are built below the tops rather than above the rear tires like standard cargo box trucks. Some trucks also have an over the cab storage area called "Mom's Attic. " The trucks are painted with SuperGraphics which are educational images of different states and provinces across the United States and Canada. Pickup trucks and cargo vans are also available at most corporate owned centers, and select neighborhood dealerships.