VEB Sachsenring Automobilwerke Zwickau had its origins in the former Auto Union/DKW business which has operated out of the site prior to the war, and the company's first products were essentially copies of pre-war DKW designs. Following the partition of Germany, Auto Union re-established itself in West Germany (ultimately evolving into Audi), leaving VEB Sachsenring with the two stroke engine inherited from DKW. The Trabant was the result of a planning process which had been intended to design a three-wheeled motorcycle. In German, Trabant is an astronomical term for a moon (or other natural satellite) of a celestial body. Full production The first of the Trabants left the VEB Sachsenring Automobilwerke Zwickau factory in Saxony on 7 November 1957. It was a relatively advanced car when it was formally introduced the following year, with front wheel drive, unitary construction and independent suspension. The Trabant's greatest shortcoming was its engine. By the late 1950s, many small West European cars (such as the Renault) had cleaner, more-efficient four-stroke engines, but budgetary constraints and raw-materials shortages mandated an outdated (but inexpensive) two-stroke engine in the Trabant. It was technically equivalent to the West German Lloyd automobile, a similarly sized car with an air-cooled, two-cylinder four-stroke engine. The Trabant had a front, transversely mounted engine and front-wheel drive in an era when many European cars were using rear-mounted engines or front-mounted engines with rear-wheel drive. Its greatest drawback was its largely unchanged production; the car's two-stroke engine made it obsolete by the 1970s, limiting exports to Western Europe. The Trabant's air-cooled, engine—upgraded to in 1962–63—was derived from a pre-war DKW design with minor alterations during its production run. The first Saab car had a larger (764 cc), water-cooled, two-cylinder two-stroke engine. Wartburg, an East German manufacturer of larger sedans, also used a water-cooled, three-cylinder, , two-stroke DKW engine. The original Trabant, introduced in 1958, was the P 50. Trabant's base model, it shared a large number of interchangeable parts with the latest 1.1s. The 500 cc, P50 evolved into a version with a fully synchronized gearbox in 1960, and received a , engine in 1962 as the P 60. The updated P601 was introduced in 1964. It was essentially a facelift of the P 60, with a different front fascia, bonnet, roof and rear and the original P50 underpinnings. The model remained nearly unchanged until the end of its production except for the addition