This article is a bit more in depth than the last mention:
"Feedback Farms is an experiment in movable urban gardening. Because the soil was considered contaminated, all the gardening is done in containers. And to get the land, Ms. Johnson stressed that the garden was temporary, and the city or a private owner could reclaim it at any time. (They) designed a vegetable garden that could be moved on short notice, using forklift pallets. In Our Back Yard provided a grant of $4,484 for the garden."
Well - we are farming not gardening, but other than that we are pretty stoked to be getting attention. Lots of work ahead!