Audi surprised this year at the North American International Auto Show in Detroit, debuting the H-Tron Quattro, a hydrogen fuel cell-powered small SUV loaded with new technology. The company delighted in 2013 with the Sport Quattro Concept that Car magazine was actually able to drive and loved. The Audi Quattro has been a history of surprise and delight, and has been documented many times by many, many sources, so I won’t bore you with a restatement of the facts. Instead, here’s a film from Audi’s perspective, taking a look at the history of their legendary AWD system and the incredible cars it has motivated.