We recently blogged about the fantastic experiment to get people to take the stairs rather than the escalator by turning them into a giant piano (66% more did so as a result).
The one at the top of this post sees if you can get people to pick up their litter by making the rubbish bin sound like it's a deep underground well ;-)
We can't wait for the new one which makes bottle recycling into an arcade game.
Can't help wishing VW put as much effort and fun into sustainable transportation as well!
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