In the scene where they are in the mall getting clothes, you can see that there are some flags hanging from the ceiling. They're supposed to be in Detroit right? Well, I'm from Canada and I could recognize some of those flags. They are Canadian provincial flags; British Columbia and I think Manitoba. If it was in the U.S., then it would have State flags or national flags of other countries, not Canadian provincial flags. This movie must have been filmed somewhere in Canada.