[gallery link="none" columns="1" size="full" ids="31194"] source: Audi Sport Most prestigious GT3 event in the world ready to race in Belgium Audi Sport to meet with ten other brands in a field of 72 entrants Eleven GT3 race cars and up to six GT4 race cars from Audi at Spa The 24 Hours of Spa from July 25 to 28 is a GT3 event of mammoth proportions: 72 race cars from eleven manufacturers are going to battle for victory in the most important GT3 endurance race of the year. The elite of endu...