The idea, per Laughing Squid, is a design for mobile living quarters camouflaged as a row of garbage cans and movable by bicycle. Seems to be meant as a joke.
The jokester being artist Joey Skaggs of New York City, who plans to parade through Lower Manhattan on Monday with a prototype for such "Mobile Homeless Homes" in a happening that has also something to do with foreclosures, Muppets and Goldman Sachs.
Eh, go read the linked item. The Squidsters have a better handle on this than I do.