I have a perfect defence. What I do (and have done every time) is if a cop asks me to get out of my car, I get out. Easy and pretty much guaranteed to stop the officer dragging me from my vehicle. I can see two common reasons why they would want me out of the car: I have committed, or am about to commit, a crime of some sort. They are looking for someone who has committed a crime of some sort. Any other reason is so uncommon as to be ignored. In the first case, I should be removed from my vehicle and arrested. In the second, I don't want criminals wandering the streets so if I comply and make the act of eliminating me from their enquiries fast and easy then it's that bit closer to them getting who they want. Reasons to refuse to get out? I've committed a crime and don't want to be caught. I have some sort of pompous and arrogant desire to prove that "nobody tells me what to do" and I think the best way to demonstrate that fact - and defend my civil liberties - is by being an utter dick.