Dale Earnhardt Jr. is back after his top-5 finish in the NASCAR Xfinity Series race at Homestead for another episode of Dirty Air. After an up-and-down day at the race track, he and co-host Mike Davis had a lot to unpack: The short turnaround from practice to qualifying  What happened to cause the on-track incident with Josh Berry Behind the scenes of the pit road interview with PitBull Denny Hamlin and Martin Truex Jr. head to Martinsville below the cut-off line Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.