 Complete the following phrase:  Monzas banking had been built over and only the road circuit was used, which had been modified slightly. The new long, fluid final corner was now two around 90-degree corners. 1949 saw Italian new-boy Alberto Ascari, son of the late 1924 Italian Grand Prix winner Antonio Ascari, win in his Ferrari; Enzo Ferrari was now building his own cars instead of running Alfa Romeos. 1950 saw the new Formula One Championship being established. The race and the first championship was won by Giuseppe Nino Farina, driving a supercharged Alfa Romeo 158. 1951 saw Ascari win again, after the competitive Alfas of Farina and Argentine Juan Manuel Fangio ran into engine problems. 1952 saw Ascari complete his domination of that season. 1953 Fangio won in a Maserati; although Ascari had already won the championship at the Swiss Grand Prix. 