Rounds 9 & 10 of the 2013 Porsche IMSA GT3 Cup Challenge by Yokohama features drivers racing in the largest single-make series in North America. Powered by one of the world's most successful race cars, the Porsche 911 GT3 Cup Type 997, the multi-class structure of this series teaches drivers essential skills for a career in the American Le Mans Series.

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Porsche IMSA GT3 Cup Challenge from Road America [video]