That's your local programmers betting (probably correctly) that more people in Chicago would rather watch the Cubbies than IndyCar.
If you are talking about the Saturday race, it was over by about 5:10 due to lightning. But, the Sunday race went long due to a red flag.
See all 13 of my Indy 500-related reviews (books, audio and video) here:
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on June 3, 2015, 12:25 am, in reply to "