Dale Earnhardt Jr. is back from the Racing Capital of the World to join co-host Mike Davis for another episode of Dirty Air. After a compelling NASCAR race weekend in Indianapolis and some new developments in the life of fatherhood, the guys had plenty to unpack:

• Isla’s first day of kindergarten
• Michael McDowell’s emotional win
• How did the road course ringers fare? 
• Is the Indianapolis Motor Speedway oval coming back?