"The Auto Union Grand Prix racing cars types A to D, were developed and built by a specialist racing department of Horch works in Zwickau between 1933 and 1939.
Between 1935 and 1937 Auto Union cars won 25 races, driven by Ernst von Delius, Tazio Nuvolari, Bernd Rosemeyer, Hans Stuck and Achille Varzi. Much has been written about the difficult handling characteristics of this car, but its tremendous power and acceleration were undeniable - a driver could induce wheelspin at over 100 mph (160 km/h).
The cars throughout their production history were the main Grand Prix protagonists with Mercedes-Benz, particularly dominant in 1936. The dominance of the Silver Arrows of both brands was only stopped by the outbreak of World War II in 1939."