Topic summary
USAC Stock Car
Extracted from the Wikipedia article AAA and USAC Stock Car.
The USAC Stock Car division was the stock car racing class sanctioned by the United States Auto Club (USAC). The division raced nationally; drivers from USAC's open wheel classes like Indy cars, Silver Crown, sprints, and midgets frequently competed in races and won championships. Several NASCAR drivers raced in USAC Stock Cars at various points in their careers.