Definitely an Audi...
The Rosemeyer Concept was named after Bernd Rosemeyer, a race car driver for Audi. Rosemeyer, considered one of the finest German drivers in his time, died at age 28 in a world record attempt on the 28th of January, 1938 when his Auto Union Streamliner rolled over several times at some 440 km/h (274mph) on the Frankfurt to Darmstadt autobahn.
Engine: 8004cc W16
638 BHP
Top Speed: 350 Km/h (217mph)