Porsche, Ferdinand 1875 - 1951. German car designer and engineer Designed the Volkswagen Beetle, first mass produced 1945. By 1972 more than 15 million had been sold, making it the world's most popular model. Porsche sports cars were developed by his son Ferry Porsche from 1948. Ferdinand Porsche designed his first racing car in the mid-1930s, which was successfully developed by Auto-Union for their racing team. Ferry's Porsche Company produced Grand Prix cars, sports cars, and prototypes. Their Formula One racing car was not successful and it was at sports-car and Can-Am racing that they proved to be more dominant. Ferdinand Porsche was born in Bohemia. He was technical director with Daimler-Benz 1923-29 and formed his own company 1931. In 1932 he devised the first torsion-bar suspension system, which was incorporated in the Volkswagen prototype he began working on 1934. In 1936, he received a contract from the German government to develop the Volkswagen and plan the factory where it would be built. World War II halted this development, so Porsche designed the Leopard and Tiger tanks used by German Panzer regiments and helped to develop the V1 flying bomb. In the 1930s Porsche also designed light tractors, and worked on aviation engines and plans and designs for wind-driven power plants - large windmills with automatic sail adjustment.