Jeff Kline's powerful and impressive 1937 Alfa Romeo 12C-37 V12 Grand Prix car won the race for the later, faster Pre- War cars.  This car battled the "Silver Arrows" of Mercedes-Benz and Auto Union in the climactic era of Pre-War Grand Prix racing.

World War II hit automobile racing like the asteroid impact that ended the age of the dinosaurs.  This mass extinction stopped the development of many complex and interesting cars.  Nothing like them ever appeared again.