The report says that his car flipped over during the "Night of Wings" event, and he was airlifted to the hospital where he was pronounced dead. According to ESPN, this marks at least the fourth fatal crash at a dirt track this year, including two people killed at a sprint car event at Marysville Raceway Park in Northern California.
Leffler had most recently run in the Sprint Cup race last weekend at Pocono, but spent most of his 12-year NASCAR career in the Nationwide Series where he visited victory lane twice. He also won a race in the NASCAR Camping World Truck Series and finished 17th at the 2000 Indianapolis 500. A single father, Leffler is survived by his 5-year-old son.