The scenario you describe is so strange and bizarre that I would almost guarantee that it would never happen to you. If you were to be stopped by the police, just answer as straightforward as possible, and be as cooperative as possible.
If they ask permission to search your vehicle, say "Yes, but I would like for my wife to video tape it." If they were to begin tearing things up (Which, in this age is HIGHLY unlikely) you can rescind your permission and ask for a lawyer. They probably have their own video tape running in the car.
At NO TIME should you become argumentative or combative. Just keep the video camera rolling.