Auto Union, a German automobile manufacturer, made a series of pre-war supercharged Grand Prix racing engines for their Auto Union racing cars; between 1934 and 1939.
Auto Union, a German automobile manufacturer, made a series of pre-war supercharged Grand Prix racing engines for their Auto Union racing cars; between 1934 and 1939. (en)
Auto Union, a German automobile manufacturer, made a series of pre-war supercharged Grand Prix racing engines for their Auto Union racing cars; between 1934 and 1939. (en)