IMSA: Cadillac ATS-V.R testing

Could Cadillac make a return to endurance sports car racing?  They raced with a Le Mans Prototype between 2000 and 2002.  Here, is footage, from testing at Sebring International Raceway of the Cadillac ATS-V.R, testing at Sebring International Raceway.  This car, with what sounds very much like a turbo V6 motor, could race in the GT Daytona division of the WeatherTech Sports Car Championship.  But, that remains to be seen.