View Post Ad Biz | Agencies | Brands | Campaigns FCB Mayo, UTEC Create Air-Purifying Billboard By Erik Oster on Apr. 30, 2014 - 4:01 PM Last year FCB Mayo (then Mayo Draftcb Peru) teamed up with The University of Engineering and Technology (UTEC) in Lima, Peru, to create the world’s first water-generating billboard in the desert city. The innovative campaign ...