There is a micro-write-up about the Boulder Trailer Wrap in this month's Dwell. The whole concept behind the Boulder project is to provide affordable housing and renovate often times leaky and old trailers making them more energy efficient. I walk by this one all the time and I don't know that anyone has actually moved into it. It's in a pretty good location, right near the bike path and about a 10 minute walk to down-town.
I remember speaking with someone from CU about the project and I can't quite remember how successful it has been in Boulder. It's a great idea but I wonder how feasible it would be without donated labor and materials.