Indianapolis Motor Speedway owner Eddie Rickenbacker sold the track to Tony Hulman in November 1945, by which time it had fallen into a dilapidated state of disrepair.

The Contest Board met after the season, and it was not until then which they declared the Big Car races would be dropped from the National Championship - effective for 1947.

Furthermore, the prize money and 1947 car number assignments are consistent with the final points standings reflecting the full 77-race schedule.

Incidentally, based on his points totals, Horn would have been declared the champion with or without the 71 "Big Car" races included.

† Robson was killed in the race at Lakewood Speedway on September 2 The official IndyCar Series Historical Record Book (2011) listed only the six "Champ Car" in the schedule.