Audi has a long and illustrious history in motorsport. The five-cylinder Audi Quattro that took rallying by storm in the 1980s usually takes the starring role in the company's publicity material, but Audi of America has produced this video, citing the fire-spitting 700bhp IMSA/GTO Audi 90 quattro as the true grandfather of the five-cylinder engine seen in the current TT RS.
