European GT Academy winner Jann Mardenborough and his American counterpart Bryan Heitkotter faced the toughest challenge so far of their intensive ‘Driver Development Programme’ on Sunday, 24 July at Castle Combe. The pair campaigned their PlayStation® Nissan Team 370Z to a second-in-class finish (17th place overall) in the competitive Britcar Dunlop Production GTN Championship. The strong result in the two-hour endurance race secured each driver two more vital ‘signatures’ required for them to attain the international race licence that will allow them to compete in the Dubai International 24 Hour Race in January 2012.