The 2013 Audi S8 is Audi's most powerful and largest luxury sedan. It is the flagship of the Audi sedan line of cars. With over 500 horsepower, two turbos, all-wheel-drive and a price tag of just $125,000 USD, it is the ultimate Audi luxury car. And yes it is fast, and yes it is big and yes it is very fun to drive. In another fun and informative TFLcar review, we find out not only how much fun it is to drive, but also how fast it is from 0-60 MPH at a mile above sea level.