1940 Firestone Champions. What The Indianapolis Speedway Means To Safety On The Highway Published April 7, 2024 at 1536 × 2011 in Firestone ← Previous Next → PosterHistory > Tires > Firestone > 1940 Firestone Champions. What The Indianapolis Speedway Means To Safety On The Highway 1940 Firestone Champions. What The Indianapolis Speedway Means To Safety On The Highway Source: Saturday Evening Post