DAYTONA BEACH, Fla. (AP) — Chris Buescher caught a glimpse of a mangled car in the infield grass at Daytona International Speedway. He didn’t think much about it at first. Then, as he circled the track under caution, he saw a slow-motion replay of the crash on a giant video board.
Head-and-neck restraints and soft walls top list of NASCAR's biggest safety improvements