The F-4 represents the Jet fighter, Phantom like appearance of the Indy cars. Watching the Indy noticed something and wondered if anyone else sees it. Looking at the camera action as they track the cars. It appears that the camera folks are humping it trying to say on the race.

Unlike the nascar events where that same action looks like a car parade. Every thing about the Indy seems to be a tad more fast and ferrous. Just found that an interesting difference between the two events.

Could be that the field blows buy so fast because of the difference in the amount of cars that populate the two events. That may explain it but it was very noticeable for some reason this year.