U.S. SUPERLINERThis large tractor is representative of many trucks used in the USA. Equipped with powerful engines and very large fuel tanks, these vehicles travel hundreds of miles at a time from one State to another. Characterised by large drive cabs with in-built sleeping facilities and every other possible comfort, they are, for their American drivers, a true home from home. Numerous on the road movies have succeeded in making this category even more popular.