Sobo, that's an excellent idea for future tickets. Long term driving record must help.
One time I was waved over in a similar situation to the OP, but on the freeway. I was cited for going a speed my car couldn't even go. I did all the information requests and got the data that caught me for "speeding" only the car was green and *my* car was blue. It was not my car. I explained the circumstances of being pulled over and showed him the airplane records showing a green car and not a blue car, and he said "I have no idea how they ID the cars" and the ticket stood.
Lesson there, don't speed in the jurisdiction of the Ellensburg judge. Apparently you get a ticket, that guy lets it stand no matter what.
Following lesson: if you drive a semi-sporty SUV (my current car) even in a subdued color, you will be a ticket magnet. I use cruise control a lot and pay attention to signs, and have two deferrals. Also, deferrals are supposed to be only every seven years, but if you ask nice in Twisp, they might give you one anyway.