I'm sure most of us have had this situation happen to us, or at least been in a car when it was pulled over. I find it quite an odd feeling. Kind of like a mixture of regret and resentment. "Dang it, I'm such a dork. Why was I doing that." and "Stinkin Cop, why'd you have to catch me doing that." Either way, you're in the wrong and you got caught and you know it.
And in the end you make a choice... either you're ashamed, avoid eye contact and just get on with it, or you try to make lame excuses for what you were doing wrong. The Humble or the Proud. I tried to portray both sides with Rex and Frank.