1961 to 1973: product line expansion

VW expanded its product line in 1961 with the introduction of four Type 3 models (Karmann Ghia, Notchback, Squareback) based on the new Type 3 mechanical underpinnings, and again in 1969 with the larger Type 4 (411 and 412) models. These differed substantially from previous vehicles, with the notable introduction of monocoque/unibody construction, the option of a fully automatic transmission, electronic fuel injection, and a sturdier powerplant. Volkswagen added a "Super Beetle" (the Type 113) to its lineup in 1971. The Type 113 differed from the standard Beetle in its use of a MacPherson strut front suspension instead of the usual torsion bars. Also the nose of the car was stretched 2 inches (51 mm) to allow the spare tire to lie flat, and the combination of these two features significantly increased the usable front luggage space. Despite the Super Beetle's (marketed outside North America as the VW 1302, later 1303) popularity with Volkswagen customers, purists preferred the standard Beetle with its less pronounced nose and its original torsion bar suspension. In 1973, Volkswagen introduced the military-themed Type 181, or "Trekker" in Europe and the UK, "Thing" in America, recalling the wartime Type 82. The military version was produced for the NATO-era German Army during the Cold War years of 1970 to 1979. The US Thing version only sold for two years, 1973 and 1974, thanks at least in part to Ralph Nader's automobile safety campaigns.