Interesting, that is dated from August of last year (1 year ago). In fact there are several articles from that time, here is another one: http://www.treehugger.com/sustainable-product-design/rent-a-... which has a bit more detail.

But there isn't anything since then. And to me its even stranger that their homepage they don't mention the installation. So my take on that was this was a 'demo' and not a real installation. Can you tell me if there are any being commercially operated ?