This week, classic car expert Christoph Bauer picks a gem from Audi's past. The Audi Front UW 220 was a sporty convertible with a sleek Gläser body. It was one of the first German cars built using the modern platform strategy - where different brands shared the same components. The Front UW 220 had a 6-cylinder engine with 40 horsepower - an impressive figure for the time.