It's good advice to follow. The hard part is getting people to see the light that all the little things add up into something palpable.
Every road I drive on has two lanes of traffic going in the same direction. I always stay in the right lane and go the speed limit. The highest speed limit on my route is 65MPH. I will go up to 65 since it's only for 2 minutes of my commute. The rest of my trip is spent at 55MPH. Even going the speed limit I'm passed often. The only thing is: I don't feel bad for making people have to pass me since A) They are the ones going beyond the speed limit, B) They have a passing lane and have plenty of time to see that I'm not speeding since there are no hills on my route, and C) They have a chance to see my license plate frame "My car is slow but 50+MPG".
If there ever is a semi barreling upon me, even above the speed limit, I will make sure that they are able to pass easily.
Also, when I get passed by a semi and they want to get in front of me, I make sure to signal to them by blinking the high beams twice. I always get a great response from the truckers with the parking light flash from them. I also do this to let them know I see them and it is safe to pull in front of me from a merging/on ramp lane.
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