Modern American cities bear a powerful physical imprint of automobiles and other motorized vehicles. It is estimated that as much as one half of a modern American city’s land area is dedicated to streets and roads, parking lots, service stations, driveways, signals and traffic signs, automobile-oriented businesses, car dealerships, and more. Equally significant, space allocated for other forms of transportation ultimately shrank or disappeared. For example, sidewalks—normally considered essential to separate pedestrians from various transportation modes—were less often constructed along many urban roads and streets in the automobile era. Walking seemed increasingly incidental in moving people from place to place. Bicycle lanes, quite common in several European cities, were late-comers or non-existent in American cities as competitive forms of transportation were squeezed out by an increasing dependence on cars.
You never change things by fighting the existing reality. To change something, build a new model that makes the old model obsolete. R. Buckminster Fuller