When snack food brand SunChips decided to go solar to make its chips it seems that they thought “why not use solar energy for everything?” In a very creative out-of home-campaign, they created billboards that depend on the sun to form its content by casting shadows.

SunChips is a California company and this is definitely a California idea. I mean, although its immensly creative, the billboards don’t “work” at night and poorly, if at all, on cloudy or rainy days. Anway, the video below explains it all.