The Alfa Romeo 158 practically invented the Formula One racer, and remains one of the sport's most successful cars. First produced in 1938, the 1.5-liter, front-engined car weighed just over 600 kg but produced more than 300 bhp. It carried Italian Giuseppe Farina to the first F1 world drivers' championship in 1950 and a modified "159" model took the title in 1951, cutting the template for lightweight, narrow-bodied, agile F1 cars.