I'm somewhat motivated to not be passed and to pass, but I use the Silly Commuter Racing "rules". Which basically means I "have" to pass anyone but a roadie in Lycra. I'm not adamant about it, and am willing to hang behind someone for awhile if the lane is crowded. I fail to catch someone, or get passed, maybe once a month. When summer comes, I seem to lose a bit more often.
I had to google this. I guess I have been playing the game! I have to give myself more credit, being pretty low on the foodchain. Thanks - now I know the 'rules'.