The Opel Olympia is a compact car by German automaker Opel, then part of G.M., from 1935 to 1940, and after World War II continued from 1947 to 1953. It was one of the world's first mass-produced cars with a unitary body structure, after the 1934 Citroën Traction Avant; and it was a mass-production success, made in six-figure numbers. Opel achieved this even before the war, all while Hitler promised Germany a "Volkswagen" - a 'People's car', which didn't materialize until 1946. From 1967-1970 the Olympia badge was briefly reused on a later car. The 1935 Olympia was Germany's first mass-produced car with an advanced all-metal unitary body - even a full monocoque in the case of the closed-roof saloon models. This for its time revolutionary technology supplanted the previously customary vehicle body, supported on top of a separate load-bearing chassis, reducing the car's weight by up to 180 kilograms (400 lb.) compared to its predecessor. Production of the unibody design required new production methods and materials. Wood framing in the car's body was all but eliminated - instead, advanced types of sheet-steel, fastening by spot welding, and a new production line layout were among the many advances introduced with the Olympia. The car was first presented in February at the 1935 Berlin Motor Show; production got under way later during that year. The Olympia was named in anticipation of the 1936 Berlin Olympic Games. The pre-war Olympia was made in two versions: From 1935 to 1937 the Olympia had a 1.3-litre engine; for the OL38 version made from 1937 to 1940 this was replaced by a 1.5-litre overhead valve unit. Between 1935 and 1940, over 168,000 units were built. The car was also Opel's first post-war automobile when it re-entered production in 1947. This time it was built until 1953. The name Olympia was revived for a second time in 1967 for a luxury version of the Opel Kadett B. Opel Olympia (1935–1937) At 2500 Reichsmark it offered a true four-seater with 1.3-litre, four-cylinder, side-valve, engine capable of 100 km/h (62 mph). Drive was to the rear wheels through a three-speed gearbox but a four-speed unit became available in 1937. The car had independent front suspension with a live axle at the rear and semi-elliptic leaf springs. This car was also assembled in Tanjung Priok, near Jakarta, in the then-Netherlands East Indies. Assembly there began in 1938 and the