Tuesday, March 26, was supposed to be a routine morning at the resurrected North Wilkesboro Speedway. The legendary 0.625-mile short track is carved into the foothills that rise from the red dirt northwestern corner of North Carolina, where the Piedmont region gives way to the Appalachian Mountains. The NASCAR All-Star Race, which takes the green flag Sunday night, was still eight weeks away, what should have been a comfortable span for the speedway ground crews that were starting the process of waking the 77-year-old bullring from its wintertime slumber. The drone of leaf blowers echoed off the crusty concrete frontstretch grandstand.