until 1950, nearly every domestic manufacturer offered at least one fastback body style within their model lineups. In the mid-1960s, the style was revived on many GM and Ford products until the mid-1970s. In Europe, there was a sloping rear on streamlined cars as early as 1945, from which, among other things, the shapes of the Volkswagen Beetle and Porsche 356 are derived. Australia In Australia, fastbacks (known as "slopers") were introduced in 1935, first designed by General Motors' Holden as one of the available bodies on Oldsmobile, Chevrolet, and Pontiac chassis. The sloper design was added by Richards Body Builders in Australia to Dodge and Plymouth models in 1937; it was subsequently adopted by Ford Australia in 1939 and 1940, as well as a sloper style made on Nash chassis. According to automotive historian G.N. Georgano, "the Slopers were advanced cars for their day". Japan In Japan, the Toyota AA first adopted the fastback style in 1936. It was strongly influenced by the 1933 DeSoto Airflow. The 1965 Mitsubishi Colt 800 was the first post-war Japanese fastback, and the 1958 Subaru 360 was the first kei fastback. The Prince Skyline 1900 Sprint was developed by Prince Motor Company in 1963, but was never marketed. Afterwards, all Japanese automakers adopted the fastback style, with the 1967 Honda N360, 1968 Nissan Sunny Coupe, 1968 Mazda Familia Rotary Coupe, 1970 Suzuki Fronte "Sting Ray Look", and 1971 Daihatsu Fellow Max. From the late 1960s to the 1970s, American coke bottle styling became popular in Japan, as seen on Toyota's 1973 Celica "Liftback". "4-door coupe" A decisive change of course took place in 2004, when the first generation of the Mercedes-Benz CLS-Class was launched. It was called a 4-door coupé, a purely marketing term describing its fastback sedan arrangement, with fastback coupé-profiled bodywork and two doors on each side. The CLS is considered the forerunner of this market segment, but it only reinterpreted the concept—such a layout (although not a true fastback) was briefly used on the 1992-1997 Infiniti J30/Nissan Leopard J Férié. It was followed by other competing models, such as the Audi A7 and the BMW 6 Series Gran Coupé, but also models of different segments, such as the Audi A5 Sportback, BMW 4 Series Gran Coupé, Volkswagen CC , Volkswagen Arteon, Mercedes-Benz CLA-Class, Aston Martin Rapide, and Porsche Panamera. Aerodynamic advantages Fastbacks provide an advantage in developing aerodynamic vehicles with