Siata (Societa Italiana Auto Trasformazioni Accessori) which in English is ;Italian Society Car Transformations Accessories;, was an Italian company founded in 1926 by Giorgio Ambrosini that worked with modifying and tuning cars from Fiat. In 1949 Siata launched their first own car, the Siata Amica. In 1951 they came up with the Siata 300BC Barchetta Sport Spider. Around 40 were built. The design was by Mario Revelli de Beaumont and it was built by Nuccio Bertone and Rocco Motto. It was powered by a 750 cc or 1100cc Crosley engine. In 1968 they launched Siata Spring, a sports car based on parts from Fiat 850.