KINGSPORT — Kingsport Speedway General Manager Karen Tunnell literally grew up at the racetrack. A native of St. Paul, her father started racing Modifieds in Pennsylvania before she was born. She describes the sport as something that’s always been in the family, in her blood. Tunnell spent many Saturday nights at Lonesome Pine Raceway before getting into the business, in which she has worked more than two decades — the last six years as the manager at Kingsport Speedway. She’s had a successful tenure with strong car counts and the fans’ parking lot usually full on Friday nights.