Dale Earnhardt Jr. (center), driver of the No. 88 Diet Mountain Dew Chevrolet, Hendrick Motorsports team owner Rick Hendrick (left) and crew chief Steve Letarte (right) speaks to the media at Charlotte Motor Speedway on Oct. 11 in Charlotte, N.C. Earnhardt will miss two races after suffering a concussion from an accident in Talladega last week. Credit: Chris Graythen/Getty Images