The Audi R8 GRAND-AM will make its debut on the 50th running of the Daytona 24 Hours from January 26 to 29. Teams APR Motorsport and Oryx Racing are each fielding one of the newly developed customer sport race cars in the GT class of the endurance classic. Having tasted success in many races around the world, now it is time for the Audi R8 to compete in the US Will you be watching this Saturday at 3pm EST?