According to an excellent white paper available at the Thoreau Institute's website, "The next target of the social engineers and planners will be automobiles and those who drive them." According to the white paper, the strength of the social engineers and planners comes from several interest groups that will benefit from increasing urban congestion. These interest groups include: 1. Central city officials eager to maintain the prominence of their cities over the suburbs; 2. Downtown interests desiring to reverse the "declines" of downtowns relative to suburban "edge cities"; 3. New Urban planners interested in trying their theories out on various cities; 4. Urban environmentalists opposed to more freeways and the automobile in general; 5. and engineering and construction firms looking for federal dollars to spend on urban public works projects. See the full white paper at the link below.