How to interact with a police officer(s)

Nicest state trooper was in Nevada.
Dude gave me a $90.00 speeding ticket & said you had better hurry if you want to beat the blizzard expected in a couple hours.
But my Washington state patrol are very good as well
I understood that Nevada had no speed limit unless you are going crazy fast. I drove my dart from Reno to Orlando and was cruising at 100 plus of course I never saw a trooper