 In November of that year, he entered the "400 km of Tres Arroyos ", but it was suspended due to a fatal accident.During his time racing in Argentina, he drove Chevrolet cars and was Argentine National Champion in 1940 and 1941.One particular race, the 1940 Gran Premio del Norte, was almost 10,000 km (6,250 mi) long, one that Fangio described as a "terrible ordeal".