Air speed vs Ground Speed

18 February 2011 03:08 am

Sprint Cup Series driver Andy Lally (71) drives around the track as a U.S. Air Force Thunderbird F-16 fighter jet touches down at the airport next to the track during the first NASCAR Sprint Cup Gatorade Duel race at the Daytona International Speedway in Daytona Beach, Florida February 17, 2011. REUTERS