Commuter art - Robert Montgomery's billboards
Found this guy via BOOOOOOM, but I've seen some of his things before. It's part art, part poetry, often best seen outside the context of a gallery, where they attempt to describe to commuters what it's like to live in the modern world. The solar jobbies with the lights absorb solar power by day and shine by night. Click the link to his website, here, to see more. [slideshow]