I read that the whole thing was CGI, that the actors were in front of green screens. Too bad. But then I was thinking, imagine if they had decided to film it in a real city, like Chicago. Perhaps the Producer (P

calls the Mayor (M
M:Hello, Mayor Daley speaking.
P:Hey, Mayor, we're doing a movie, and want to shoot parts of it in Chicago.
M:That's great, I'm glad you are doing a movie in our town. How can I help.
P:Well, a lot of it is CGI and minitures, but we have a need to do some live action, chase scenes.
M:Great, I'm a fan of movies, and the police dept will be glad to help. Is this one of those blow up car scenes?
P:No, it's kind of like the John Belushi movie, 1941.
M:Afraid I'm not familiar with that, what does it involve?
P:Well, we have a Citation Jet with a camera in the nose, and a couple of helicopters for the intersection fly-by's and basically it'll involve a P-40 flying down Michigan Avenue at noon, about 30 feet off the ground.
M: (long pause)
M:AIRPLANES OVER CHICAGO!!!!NO (explitive deleted) WAY!!!