The Landmaster is a unique 12-wheeled amphibious articulated vehicle constructed by Dean Jeffries at Jeffries Automotive in Universal City, California, for the 1977 science fiction film Damnation Alley. Despite the appearance of two Landmasters in the film (achieved with process photography and models), only one was built, at a cost of $350,000 in 1976. While the film is fiction, the Landmaster vehicle is real. In the story, the Landmaster was designed to use as many standard truck parts as possible, so that any junkyard would have whatever was needed for repairs. The real Landmaster is powered by a 390-cubic-inch (6.4 L) Ford industrial engine, and uses the rear-ends of two commercial trucks and an Allison automatic truck transmission. It features a fully functional, custom-built "tri-star" wheel arrangement, which could actually help it crawl over boulders. All 12 wheels are driven, but only 8 are normally in contact with the road surface at any one time.