The Atheist Bus campaign In the UK has raised over £118,718.06 (approximately $182,976.18).
Now, the American Humanist Association is going for a bus campaign of their own with this ad:

That ad will appear on the sides and insides of over 200 Washington D.C. Metro buses beginning next Tuesday. It was already appearing in yesterday’s issues of The New York Times and Washington Post.
“Humanists have always understood that you don’t need a god to be good,” said Roy Speckhardt, executive director of the American Humanist Association. “So that’s the point we’re making with this advertising campaign. Morality doesn’t come from religion. It’s a set of values embraced by individuals and society based on empathy, fairness, and experience.”
…
“We expect these bus signs to generate a lot of public interest,” said Fred Edwords, director of communications for the American Humanist Association. “Some folks may be offended but that isn’t our purpose. We just want to reach those open to this message, but unaware how widespread their views are.
Will it get as much publicity and begin as many conversations as the British version? I’m not sure.
But it will be one of the more visible ad campaigns an atheist group has put together in recent years and it comes at a cost of $40,000. A billboard is nice, but it’s stationary. These ads will be seen all over the city and depending on the attention they get and the donations they generate, they’ll be seen in many other places, too.
More information on the ad campaign itself and how you can donate can be found at whybelieveinagod.com.