Ferrari built the 312PB as a Group 6 prototype sports car in 1971, but found no wins that year. After retooling it some, the '72 variant took home every single championship it was entered into, as the winningest car that year. But the next year, in '73, Ferrari abandoned the project in favor of F1 racing. These lucky fools got to race a piece of history and film the whole thing. Sounds like a proper afternoon to me.