My Other House is Made of Straw

I just got around to reading an article from last month's New York Times about a recent trend among (presumably rich) folks: incorporating environmentally friendly features into weekend houses. The story, "Second Homes That Put Ecology First," is a bit more even-handed than that title might suggest. While touting the benefits of blue-jean insulation, recycled-concrete flooring (which is also "completely indestructible for the dogs and the kids"), and photovoltaic systems, the author makes room for concerns about the size of some of these homes and the fuel used to get to them. Says one critic, "The greenest second home is one that is never built." What do you think? Is a "green second home" an oxymoron?