WATCH: Valkyrie Hypercar unsilenced at Sebring
The first footage of the Cosworth V12 let loose during IMSA Testing at Sebring
The IMSA Sportscar Championship, sponsored by WeatherTech, is North America's premier sportscar series. Featuring races across the United States and Canada, at iconic tracks such as Daytona, Sebring, Watkins Glen and Laguna Seca, plus manufacturers including Cadillac, Acura, Lexus, Corvette and Ford, in both prototype GTP and GTD classes, it has spectacular, close racing from some of the best drivers in the sport.