In many ways all the technologies and policies necessary for transforming our urban environments are extant. However they are disparate and not tied to an overall policy goal. The test becomes whether a concatenate of various systems already in use can affect urban form. A growing number of our major cities have bike share. Various corporations and in some cases specific institutions have instituted car share. EZ pass technology is now ubiquitous on our highways and not only speeds our commutes, but also aggregates travel data. Smart phone apps like Uber and Next Bus can notify us of the nearest taxi and the next bus. Sensors can be embedded into streets and garages and show real time information about use and availability. These are all mechanisms which can be used to shift the preferences, regulations and subsidies to incentivize the revitalization of central cities.