After the British “Atheist Bus” initiative (a media campaign conceived by Richard Dawkins), now also Washington, DC has a similar bus ad, brought to you by the American Humanist Association: Why believe in a god? – American Humanist Association. The Spaniards follow, with a theme which is the direct translation of the British one (see busateo.org).
In Italy, an analogous campaign is starting in Genova (it couldn’t in Rome, could it?) with a funny statement: “The bad news is God doesn’t exist. The good news is, you don’t need him.”
It is sad, however, that a similar initiative has been stopped in Australia, since a major ad network refused to run it.