I started using MapMyRide to post "Live Tracking" Facebooks posts. I don't divulge the whole route but the amount of interest this has sparked in my friends in commuting and general riding is MASSIVE. One has converted and many more are all on the path to purchasing bikes.

Most of them seem like the thought never crossed their mind. Then when they see my posts five+ times a week they start asking questions. Which I answer as welcoming as possible.

Also, I generally only refer to someone as a "Cager" when they are doing something potentially dangerous or oblivious. I myself am a "Motorist" when I drive