While your points about current urban policies shaping future suburban development are valid, suburban development is nothing new. There has been suburban development since the 1830s and car suburbs since the beginning of the twentieth century, soon after the Model T came rolling off the assembly line in 1908. Ever since, it has been popular to complain about the ills of suburban living. While driving may not be sustainable, it is equally unsustainable to demolish older suburbs to build new communities. The challenge is to adapt existing suburbs, and everything that people like about them – home ownership outside of a city center in a quiet, safe neighborhood with some surrounding greenery and hopefully better schools – into an area that is more pedestrian and bike friendly.