"Pigs To Fly By Flapping Their Pink Little Ears By 2030".I think their efforts are admirable, but doomed. I saw no mention of "Where's the food going to come from?" and "How is the food going to get here in the absence of cheap oil?"
So I'll stick to my piggie little guns: "sustainable city" is an oxymoron. Besides which, NYC, along with Cape Town and lots of other cities may by then already be faced with Seriously Rising Tides.