Towards the end of 1930, Nuvolari decided to stop racing motorcycles and concentrate fully on cars for 1931. Regulations for the season required Grand Prix races to be at least 10 hours long. For the Italian Grand Prix, Nuvolari was to share an Alfa Romeo with Baconin Borzacchini. The car started from ninth place on the grid, and when it retired with mechanical problems after 33 laps Nuvolari teamed up with Giuseppe Campari. The pair took the race win, although Nuvolari could not receive the championship points. Apart from the Belgian Grand Prix, where he came second, the only other European Championship race was the French Grand Prix, where he finished 11th. The same year, he won both the Coppa Ciano at Livorno and the arduous Targa Florio, which was run on the 92-mile (146 km) "Grande" variant of the super-twisty course that year.