source: Audi Sport The end of an era: After more than 24 years under the banner of the four rings, Audi’s longstanding head of motorsport, Wolfgang Ullrich, goes into retirement. After having previously turned over his responsibilities to his successor, Dieter Gass, at the beginning of the 2017 season, the 67-year-old was now officially retired. A large farewell party in Neuburg an der Donau on Thursday night was attended by more than 300 former colleagues and associates – including m...