Audi Tradition celebrates three big anniversaries at the Techno Classica in Essen from 21 to 25 March. The 50-year-old history of the Audi 100 will be the leading brand presentation theme at the world's largest exhibition of classic vehicles. In 1968, Audi entered the upper executive segment with the sedan. Also, motor sports fans can look forward to the 1988 Audi 200 quattro TransAm and the 1938 Auto Union Type D racing car.