Air cleaning billboards.

Toyota promotes its Mirai Fuel Cell in Los Angeles and San Francisco with billboards that capture nitrogen dioxide. You heard right: The ads clean the air, thanks to the titanium dioxide coated vinyl used in the sign. The carmaker put up 37 copies that shall “scrub” the equivalent NOx emissions of 5,285 vehicles each month – even exhaust gases of arch-rival VW’s diesel cars.
carnewsmagazine.com, insideevs.com