Question: What war did the owner of the Indianapolis 500 Speedway who jeopardized the 1946 AAA Championship Car season fight in? 
Sentence (from "1946 AAA Championship Car season"): Even the Indianapolis 500 was in doubt, as the speedway was neglected during the war, and owner Eddie Rickenbacker sold the track to Tony Hulman only in November 1945.
Relevant evidence: Yes