Dale Earnhardt Jr. drives the #88 National Guard/AMP Energy Chevrolet during practice for the NASCAR Sprint Cup Series Coca-Cola 600 on May 21, 2009 at Lowe's Motor Speedway. (Photo by Rusty Jarrett/Getty Images for NASCAR) hide

Dale Earnhardt Jr. drives the #88 National Guard/AMP Energy Chevrolet during practice for the NASCAR Sprint Cup Series Coca-Cola... more