To cut a long story short, the movie was shot in beautiful Amsterdam, which was portrayed as a place of imminent catastrophe with empty streets and no people around. I thought that Deep Angel would have been a prime candidate for such a movie allowing the movie crew to shoot the scenes with people wandering around, cars passing by and then just run the film through Deep Angel to remove those unnecessary artefacts "auto-magically". No permission necessary to close down or evacuate streets, buildings and whole areas in order to shoot a film.