I am particularly taken by Grass & Daisy's smoothy vans. The dancing grass vans are best described as ice cream van pimped up by a countryside lover, on acid.
Not only does it look truly brilliant it even has hydraulics anyone on 'the street' would be proud of. So it literally does rock. Of course being covered in grass and flowers also means it will probably not be a car thief's first choice, and can always be found. On the downside is may not the easiest van in the world to paralell park.