Le Mans 2013 is full of famous names from across motorsport, with drivers not just from sportscar backgrounds but also from F1, GP2, IndyCar, touring cars, even V8 Supercars. Senna, Chandhok, Di Grassi, Kobayashi, Briscoe, Conway, Bright. These are liberally spread across four classes, four races happening on the track at the same time. Audi walkover? Maybe, maybe not, but there's plenty else to watch for at Le Mans.