It's an billboard designed by an engineering college in Lima. This billboard uses certain processes to trap polluted air in to a water filter. This way the billboard can clean up to 100,00 cubic meters of air every day. You can compare this to the output if 1200 trees a day!
Hell yeah it's cool. Al tough if these billboards get to be every where around the world, some people will get more slacky. 'ooh who cares if I take my car, the billboards will clean the air anyways.' But on the other hand I do really think it's cool because if you live in a clean your health will improve a lot.
Future growth potential?
Our air is getting more and more polluted every day. I think these billboards can make u huge difference in cities like Honk-Kong or in India. because in those places it's the worst of all. Of course there will be so much less pollution in the future thanks to solar,wind and water energy but there will always be pollution. Your physical well being will improve because clean air is a clean body.
Wanna know more watch little video.