I have not yet run across any economic analysis of the impact of the exurb philosophical movement, but it sure seems worth exploring. Here's the latest NY Times article about the exurb phenomenon, but it says little more than the average Portland Tribune article about family exurb flight. The NY Times, no surprise, does a better job of capturing the sort of 3-day time horizon philosophy that leads to the explosive growth of exurbs: "I love Frisco to death," she said, "but it's having growing pains." Well, duh, yes, you have met the growing pains, and it's you. Like the long-term, back-to-the-USA trend I envision for outsourcing, I foresee a moment where city urban cores suddenly become more affordable than the latest 50-mile-out suburb. Much like the outsourcing problem, I wonder whether there isn't a smoother approach.