I understand that there's a tunnel back east somewhere that advertising is being sold on and in. On one end of the tunnel is a message board that says something to the effect "Believe in God and you will be saved." On the other end of the tunnel is a message that says "There is no God." I would guess that a person that uses this route to commute to work would wondering what they really believe.
Perhaps that most important message would be the one in the middle of the tunnel. It states, "Jesus Christ! Look where you're going!"