The Maserati brothers, Alfieri, Bindo, Carlo, Ettore, and Ernesto, were all involved with automobiles from the beginning of the 20th century. Alfieri, Bindo, and Ernesto built 2-litre Grand Prix cars for Diatto. In 1926, Diatto suspended the production of race cars, leading to the creation of the first Maserati and the founding of the Maserati marque. One of the first Maserati’s, driven by Alfieri, won the 1926 Targa Florio. Maserati began making race cars with 4, 6, 8, and 16 cylinders (two straight-eights mounted parallel to one another). The trident logo of the Maserati car company, designed by Mario Maserati, is based on the Fountain of Neptune in Bologna's Piazza Maggiore. In 1920, one of the Maserati brothers used this symbol in the logo at the suggestion of family friend Marquis Diego de Sterlich. It was considered particularly appropriate for the sports car company due to the fact that Neptune represents strength and vigor; additionally the statue is a characteristic symbol of the company's original home city of Bologna. Alfieri Maserati died in 1932, but three other brothers, Bindo, Ernesto, and Ettore kept the firm going. In 1937, the remaining Maserati brothers sold their shares in the company to the Adolfo Orsi family, who, in 1940, relocated the company headquarters to their home town of Modena, where it remains to this day. The brothers continued in engineering roles with the company. Racing successes continued, even against the giants of German racing, Auto Union and Mercedes. In back-to-back wins in 1939 and 1940, an 8CTF won the Indianapolis 500, making Maserati the only Italian manufacturer ever to do so.[9] The second world war then started and Maserati abandoned car making to produce components for the Italian military. During this time, Maserati worked in fierce competition to construct a V16 town car for Benito Mussolini before Ferry Porsche of Volkswagen built one for Adolf Hitler. This failed, and the plans were scrapped. After the war Maserati returned to making cars and key people joined the Maserati team. Alberto Massimino, a former FIAT engineer with both Alfa Romeo and Ferrari experience, oversaw the design of all racing models for the next ten years. With him joined engineers Giulio Alfieri, Vittorio Bellentani, and Gioacchino Colombo. The focus was on the best engines and chassis to succeed in car racing which resulted in the A6GCS.