in North America, although the first such vehicle in the world was built in Europe slightly earlier, in 1939 (by Isotta Fraschini/Stanga in Italy). The company built only two articulated trolley buses, and each was marketed as a "Super Twin" model. Both were originally built as demonstrators. The 1940 unit was eventually sold to the Cleveland transit system and entered service there. The second was built as a gas-powered bus in 1946, but was converted into a trolley bus in 1948, leased to the Chicago Transit Authority and was sold to CTA in 1954. With both vehicles, the articulation joint allowed only vertical, not horizontal, movement. These two prototypes never led to any series production, so each remained unique. The 1948 Chicago vehicle is preserved at the Illinois Railway Museum. Until 1985, these two vehicles remained the only articulated trolley buses ever built in North America by any manufacturer. Motor buses Twin Coach also built motor buses (buses powered by internal combustion engines). Fuels included at least gasoline and propane. Between 1927 and 1934 alone, the company built more than 1,100 motor buses, including 21 with gas-electric drive. Bus production continued through to the time of the company's acquisition by Flxible, in the 1950s. For many years the Fageol 'Twin Coach' was used to take passengers from Canada to US (and back) via the 'Detroit-Windsor Tunnel' under the Detroit River. Sale of bus division In 1955, the bus manufacturing operations were sold to Flxible, which was also based in Ohio. For a time, Flxible used the Twin Coach name – along with its own – in its marketing and some buses carried front name plates that gave both names and combined the companies' two logos into one. By 1963, use of the Twin Coach name on buses had been discontinued. The marine-engine and aircraft divisions continued as Twin Coach. In 1958, after selling the marine division to Crofton Manufacturing Company of Los Angeles, the company moved its remaining production to Cheektowaga, New York. In 1962, the company's name was changed to Twin Industries. A portion of the company called Highway Products produced a number of products, such as small Post Office vehicles, mobile post offices used in rural areas, small boats for military and commercial uses, missile launchers and a variety of other products. Production of a small bus, sold under the "Twin Coach" name, began in 1969. In 1970,