Filming a girl dressed as a police officer on the side of a fairly busy road would obviously have been rather risky, especially if any real police had happened by during filming, particularly at the moment when Shauna exposes all to pee into the cup. Here is how we did it. A green screen was used for the backdrop, and filming actually took place outside our garage door. The end result is fairly convincing, although there are edge effects which rob the scene of a completely authentic look. Alas, these were not easy to remove. Overall though, this worked well. We have a movie with Candle and Dixie, to appear next week, where the girls seem to be standing out in a public location while dying to pee.
Green screen was used throughout these two movies, whereas it is better to use it more frugally, i.e., for certain scenes only. It will be used this way in the future. The main problem is that the camera has to be locked off during green screen filming, which limits the range of the storyline. As with most things, the end result will become more professional with experience.