What Would I Say?

All unsuspecting, I came across a car with this on its bumper the other day:


I'm not commenting on the coat of salt, as you may imagine. No, it's the bumper sticker (combined with the Christian fishy).

It made me think about what I could possibly say to this person if we were put in a room together. How do you even start a conversation (about anything other than the weather and all the salt coating our cars) with someone whose world view diverges so much from your own?