This is another micro-farm that can go anywhere. It could grow delicious fresh vegetables on a deck, rooftop or along a concrete driveway, anywhere there is sun. This garden is in the San Francisco Bay Area and the photos are on Flickr under the name mangrovefarms.
Those are EarthBox type sub-irrigated planters (SIPs) inside the "raised beds" but they could just as well be rain gutter SIPs as created by Larry Hall. The rain gutter system includes auto-irrigation and can support a variety of SIP containers, from utility buckets to tote boxes. See rain gutter SiP photos on Facebook.
The potential for local fresh food production in cities is enormous using these systems. All we need is more publicity about the variety of simple configurations that creative people are sharing on the web.
We the people can create our own "people's gardens" in spite of the lack of help from our backwards looking horticultural institutions.