I've seen some of these before, others just seem variations on a theme; I don't have anything original.
Truthfully, as many people that have been around as many years as they have, promoting the lifestyle (Grant Peterson, for example), I think a real crowd-pleaser would already have been put out there. It may take something as 'dumbed down' as basic math, showing why cars are so bad and bikes so much better. But again, I'm drawing a blank.