The middle categories (S2000 and S1500) numbered 16 cars. In retrospect, the biggest news was the arrival of an Italian newcomer: Enzo Ferrari was represented by two racing versions of his first production car, with a two-litre V12 developing 140 bhp and a top speed of 210 km/h. He had been Alfa Romeo's team manager in the 1930s but was now a constructor in his own right. However, not confident of the car's reliability, Ferrari had not entered instead the pair were privately entered. Both had recently been purchased after gaining success in the Mille Miglia.