&gt;If we could clone this neighborhood and built it elsewhere, it would be a good thing. But we don&#x27;t seem to be able to build neighborhoods in this style anymore.<p>It&#x27;s not that we&#x27;re unable, it&#x27;s that North Americans have chosen not to.  Nice dense developments are bad for cars, and car-lifestyles are what North Americans have culturally designated as the marker of success.  Therefore you see a false correlation: dense developments are only built to house those too poor to participate in car culture.