AAA decided to stop sanctioning all racing classes after Bill Vukovich's death at the 1955 Indianapolis 500 was followed closely by the 1955 Le Mans disaster.

USAC continued to sanction the Stock Car division until 1984 but the series had lost some luster as the events were frequently co-sanctioned with ARCA.

[1] After the division ended, many of the drivers moved to other Midwestern series such as the American Speed Association (ASA), ARCA, and ARTGO.

[1] USAC Stock Cars raced on dirt tracks, asphalt ovals and road courses.

[8] Future NASCAR drivers Dick Trickle (1968), Dave Watson (1977), Joe Ruttman (1978), Rusty Wallace (1979), and Ken Schrader (1980) plus USAC Stock Car champion Butch Hartman (1967) received the award.