Round-9-Road America, Wisconsin, USA
7-9 August, 2015, Elkhart Lake, Wisconsin, USA
, 44, Porsche, 911 GT America, GTD, John Potter, Andy Lally, 007, Aston Martin, V12 Vantage, GTD, Kuno Wittmer, Christina Nielsen
? 2015, Michael L. Levitt
LAT Photo USA