Not that I'm a huge Duany fan, but he is spot on with this statement:
"It has to be a choice. When you make smart growth mandatory, it crashes. Studies show that 70% of people want smart growth, which is great. But there are still the 30% who are really happy with their cul-de-sacs and McMansions and long commutes. And because one-third of Americans explicitly like things the way they are, you cannot eliminate that option. Reform doesn’t work when you try to exterminate conventional suburbia. To be more effective, all you need to do is level the playing field and then let the market operate."
http://www.builderonline.com/land-planning/andres-duany-on-smart-growth.aspx?rssLink=Interview:%20Andres%20Duany%20on%20Smart%20