sentences:  Introduced in 1938, the 2500 (2,443 cc) was the final 6C road car.World War II was coming and car development was stopped, but a few hundred 6C 2500s were built from 1940 to 1945.Postwar, the first new Alfa model was the 1946 6C 2500 "Freccia d'Oro" (Golden Arrow), of which 680 were built until late 1951, with bodies by Alfa.