Sunday, July 11, 1971 – Chargin’ Charlie Glotzbach won the only caution-free NASCAR premier series race contested at Bristol Motor Speedway with help from relief driver Friday Hassler, capturing the Volunteer 500. Hassler, whose own entry was sidelined earlier with a broken wheel, took the checkered flag after relieving Glotzbach with less than 150 laps remaining in the 500-lap affair.
• Thanks to the lack of yellow flags, Glotzbach still holds the race record at BMS of 101.074 mph. That mark eclipsed the previous record of 91.704 mph set earlier that season by David Pearson.
• The winning No. 3 entry was owned by Charlotte Motor Speedway promoter Richard Howard, built and fielded by team owner Junior Johnson.
• It was the first victory for Chevrolet in three years – prior to the win, Bobby Allison had been the last driver to put a Chevy in victory lane, winning at Islip (N.Y.) Speedway on July 7, 1968.
• The Glotzbach/Hassler switch was just one of many on the day at BMS. Bobby Allison took runner-up honors with James Hylton at the wheel of the No. 12 Holman-Moody Ford; Richard Petty was third and split seat time with Buddy Baker; Hylton placed fifth although G.C. Spencer was driving the entry at the conclusion of the race.
• The victory was the last of four for Glotzbach in 124 premier series starts.
• Bristol is one of seven tracks on the current NASCAR Cup Series schedule that has seen a race go caution-free. The others are Darlington (1), Daytona (7), Dover (1), Michigan (3), Talladega (3) and Watkins Glen (1).
• Even with the mid-race driver change, Glotzbach’s winning margin was still three laps.