Sprawl and suburbs won't be allowed in the future
Google up UN Agenda 21, look at it on the UN website and the analysis of it by others and you'll find that the move over the long haul is to concentrate everyone into the cities and create vast regions where people just plain won't be allowed to go. As an example of the Agenda and to tie it into this article, your automatic car is already in service in Masdar City in Abu Dhabi, where you cannot drive your own car into the streets even if it is an electric car. All the transportation in Masdar City is by small driverless transit vehicles on regulated streets. This is a prototype city built with the Agenda in mind.