Rescue workers attend to the injured in the stands following a last-lap incident during the NASCAR Nationwide Series DRIVE4COPD 300 race at the Daytona International Speedway in Daytona Beach, Florida, in this February 23, 2013 file photo. The Daytona 500 NASCAR Sprint Cup race is scheduled for February 24. To match Analysis MOTORACING NASCAR/POPULARITY REUTERS/Pierre Ducharme/Files (UNITED STATES - Tags: SPORT MOTORSPORT)
Rescue workers attend to the injured in the stands following a last-lap incident during the NASCAR Nationwide Series DRIVE4COPD 300 race at the Daytona International Speedway in Daytona Beach, Florida, in this February 23, 2013 file photo. The Daytona 500 NASCAR Sprint Cup race is scheduled for February 24. To match Analysis MOTORACING NASCAR/POPULARITY REUTERS/Pierre Ducharme/Files (UNITED STATES - Tags: SPORT MOTORSPORT)