Take a listen to my favorite IMSA WeatherTech SportsCar Championship audio session--when the GT Le Mans and Prototype classes take to the track for dedicated qualifying runs--where, in preparation for the 2018 edition of the Mobil 1 Twelve Hours of Sebring, some wild sounds were produced by the factory cars from Acura, BMW, Cadillac, Corvette, Ferrari, Ford, Mazda, Nissan, and Porsche.

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