sentences:  Fangio was leading the race, but a problem with the steering forced him to slow down.Again with Fangio at the wheel, a spider won the 1st Gran Premio Supercortemaggiore held in Merano in 1953.With the end of its racing career, the 1953 Supercortemaggiore winner 6C 3000 CM spider was used by the Experimemtal Department of Alfa Romeo for testing new components.