x1 duel Audi - RS6 VS Audi - S3
x1 duel BMW - M6 VS Porsche - 911
x1 duel BMW - ALPINA B7 VS Ferrari - 575M
x1 duel BMW - 318 VS Audi - 90
x1 duel Dodge - Cummins VS GMC - Duramax
x1 duel Mercedes Benz - SLR McLaren VS Nissan - GT-R
x1 duel Chevrolet - Corvette VS Jet - U.S. Navy Fighter
x1 duel Mitsubishi - Lancer VS Nissan - Skyline
