as the City grows

As the city grows, land values increase, often resulting in urban sprawl. Rethinking the street as potential build-able space allows the traditional urban fabric to be redirected. Rem Koolhaas argued that the invention of the elevator allowed urban space to exist on a new vertical axis, what leads us to a possible  re-conception of the street allow for mobility in multiple axes...http://www.evolo.us/architecture/beyond-the-street-gsapp/