NASCAR took six cars after the Consumers Energy 400 at Michigan International Speedway for wind tunnel and engine testing.
Two cars were taken from each manufacturer.: Kevin Harvick and Brad Keselowski (Ford), Austin Dillon and Chase Elliott (Chevy) and Kyle Busch and Denny Hamlin (Toyota).
Officials have regularly taken cars for such testing during the season to see how the competition stacks up. Cars were also taken after the spring Texas race.
“We try and find a track where, obviously, aero is going to play a bigger role,” NASCAR executive vice president and chief development racing officer Steve O’Donnell said Monday morning on SiriusXM NASCAR Radio.
“I think it’s actually Tuesday. We’ll have those results kind of going into Wednesday, and our process is to share that with [the manufacturers] and the race teams. It’s a good barometer for us for two things. To make sure we’re still within that box that we set for the current year and probably most importantly is we look to lock in 2019, the baseline we’re using matches up with all the data that we believe we have in the system. It’s a good check on both for not only ’18 but future race packages as well.”