The Grand Touring Prototype (GTP) division will form the top class of the IMSA WeatherTech SportsCar series, which kicks off with the series’ marquee event, the Rolex 24 Hours at Daytona at the end of January. Cadillac and Porsche will also run these cars in the FIA World Endurance Championship, as they chase the biggest sportscar race of all – the Le Mans 24 Hours in its centenary year.
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