There are many stretches in California that are safe at 85, and the traffic moves at that speed. Posted limit is 70 or 75.
Just to avoid a citation, I stay with the flow, but not the fastest vehicle. Let somebody else volunteer for the citation, if a patrolman decides to teach the pack by citing the fastest.
Not always. I was a passenger (fortunately) once in Maryland and we got pulled over. The guy who was driving pointed out to the cop that other cars were passing us. The cop replied "I got you, that's all that matters."