Grass cars of the world

Well, some of us know Andy loves to drive around in the grassy combi van. The idea appears to be catching on with the Milanese ingenuity growing grass on their vehicles. The ivy wheels are a nice touch. They haven't quite got the concept all covered. However the possibilities are endless seeing they can grow grass on walls.

 Ok, I didn't get a photograph of the building with grass walls, but below is a herb garden wall. Sheer genius.