No. 31 Whelen Engineering Cadillac racing team talks hybrid technology in sports car racing

One of the top teams in the IMSA WeatherTech SportsCar Series right now is the number 31 Whelen Engineering Cadillac team. They finished second at the Rolex 24 at Daytona International Speedway, but lead the Michelin Endurance Cup standings heading into the IMSA Mobil 1 12 Hours of Sebring next month.