Preparations are in full swing for the new era of sportscar racing, with Cadillac, Acura, BMW and Porsche all in a race against time to have their new LMDh contenders ready for the Rolex 24 at Daytona in January.
Outside of private testing, the four manufacturers have shared the track a number of times in the last few months, most recently at Sebring, giving them a chance to compare their performance and reliability.
