been built. Most railroads wanted diesels, but often had to settle for steam locomotives. The wartime restrictions on other manufacturers' diesel programs helped ensure EMD's dominance of the postwar diesel market, as EMD exited the wartime restrictions with a fully mature diesel engine suited for high capacity road use. Other locomotive manufacturers, under extreme competitive pressure from EMD's high-powered and reliable 567 engine in the early postwar era, embarked upon crash development programs that yielded unsatisfactory results. EMD's advantage resulted in their selling the vast majority of units in the dieselization era and a death spiral for all who tried to compete with them in the early postwar market. Subsequent models The FT was discontinued in late 1945, replaced in production by the F2, which retained the rating of the FT, but with upgraded electrical and control equipment. Additionally, the mechanically driven cooling fans, which required constant tending by the locomotive's fireman, were replaced with electrically driven fans which were automatically controlled, a system which is still in use to this day. The F2 was produced only in 1946, and afterward was replaced by updated models in the EMD F-unit series, such as the F3, F7, and F9. Original buyers Surviving units Multiple EMD FT units survive today. The lead A-unit from demonstrator No. 103 is displayed at the National Museum of Transportation in St. Louis, Missouri. The original A unit was presented to the museum in a June 27, 1961 ceremony. The Virginia Museum of Transportation currently owns a B unit, which was on loan to the Museum of Transportation from 2015 to 2020. Both units are cosmetically restored and painted in the original GM demonstrator paint scheme. However, only the A unit is from the original demonstrator set. The two B units and the other A were eventually scrapped after years of service. The B unit now on display at Roanoke, originally just a regular FT B unit, was later stripped of its engine and other locomotive parts and converted to a boiler car. It later went to the museum in Virginia. In 1989, this former FT B unit, as well as the genuine demonstrator A unit from St. Louis, were repainted in the original demonstrator colors for a celebration at EMD (McCook, Illinois, often described by mailing address LaGrange) for the 50th anniversary of the FT. They toured together and then were returned to their respective museum