Mazda has revealed more details on its prototype race cars that will be competing in the 2014 TUDOR United SportsCar Championship.
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Mazda Motorsports will be campaigning SkyActiv-D Smart Diesel-powered racecars in the top Prototype Class for the 2014 TUDOR United SportsCar Championship (USCC).
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Porsche Motorsport North America has announced that it will campaign a pair of 911 RSR race cars in next year’s Tudor United SportsCar Championship.
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