Auto Union Silver Arrow Type-D - Click above for a high-res image
According to a report by 4Car, the Auto Union name could be revived with the merger of Porsche and Volkswagen. For those unfamiliar, the Auto Union moniker was coined during the Great Depression in 1932, when four German automakers – Audi, DKW, Horch and Wanderer – merged to create what's now present-day Audi. The four interlocked rings of the Audi logo represented the alliance, but the Auto Union name carries some baggage.
Made famous by the Silver Arrow grand prix cars of the '30s, and made infamous when Adolf Hitler commissioned Ferdinand Porsche in 1933 to create a German competitor to dominate the series, the name still carries a stigma post-WWII. Chairman of the Volkswagen Group, Dr. Ferdinand Piech, is said to have suggested the title as an umbrella corporation that would incorporate the two automakers, but considering its history and reputation, the name's resurrection may be ill-advised.