Tony Stewart made his first media appearance since his season-ending accident last month in Iowa and spoke about his recovery and the signing of Kurt Busch by co-owner Gene Haas.
Veteran crew chief Greg Zipadelli is to leave Joe Gibbs Racing with immediate effect to take up the role of director of competition at Stewart-Haas Racing.
The three crew chiefs of the Joe Gibbs Racing teams of Denny Hamlin, Kyle Busch and Joey Logano have been handed large fines for trying to enter the Michigan race with unapproved oil pans.