car production was set at a maximum of 10% of the 1936 car production numbers. The company survived by producing cars for the British Army, and in 1948 the British Government handed the company back over to the German state, and it was managed by former Opel chief Heinrich Nordhoff. Production of the Type 60 Volkswagen (re-designated Type 1) started slowly after the war due to the need to rebuild the plant and because of the lack of raw materials, but production grew rapidly in the 1950s and 1960s. The company began introducing new models based on the Type 1, all with the same basic air-cooled, rear-engine, rear-drive platform. These included the Volkswagen Type 2 in 1950, the Volkswagen Karmann Ghia in 1955, the Volkswagen Type 3 in 1961, the Volkswagen Type 4 in 1968, and the Volkswagen Type 181 in 1969. In 1960, upon the flotation of part of the German federal government's stake in the company on the German stock market, its name became Volkswagenwerk Aktiengesellschaft (usually abbreviated to Volkswagenwerk AG). On 1 January 1965, Volkswagenwerk acquired Auto Union GmbH from its parent company Daimler-Benz. The new subsidiary went on to produce the first post-war Audi models, the Audi F103 series, shortly afterwards. Another German manufacturer, NSU Motorenwerke AG, was merged into Auto Union on 26 August 1969, creating a new company, Audi NSU Auto Union AG (later renamed AUDI AG in 1985). 1970 to 1999 From the late 1970s to 1992, the acronym V.A.G. was used by Volkswagen AG as a brand for group-wide activities, such as distribution and leasing. Contrary to popular belief, "V.A.G." had no official meaning, and was never the formal name of the Volkswagen Group. On 30 September 1982, Volkswagenwerk made its first step expanding outside Germany by signing a co-operation agreement with the Spanish car manufacturer SEAT, S.A. To reflect the company's increasing global diversification from its headquarters and main plant (the Volkswagenwerk in Wolfsburg), on 4 July 1985, the company name was changed again—to Volkswagen Aktiengesellschaft (Volkswagen AG). On 18 June 1986, Volkswagen AG acquired a 51% controlling stake in SEAT, making it the first non-German subsidiary of the Volkswagen Group. On 23 December the same year, it became the Spanish company's major shareholder by increasing its share up to 75%. In 1990—after purchasing its entire equity—Volkswagen AG took over the full ownership of SEAT, making the company a wholly owned