The car emerged with an orchestrated push by the auto industry, and its reign was paved by a rising demand for gasoline and government investment in highways, roads, and zoning regulations. Similarly it was a democratic drive, with legislation to follow, that gave us sanitation laws and cleaned up our streets.
To the average city dweller, the idea of a city oriented around transportation in cars, and especially privately owned cars carrying one or a few people, would have been incomprehensible. Indeed, the modern idea of a street as an artery, existing primarily to convey vehicles, would have been foreign. Streets were more like parks, used by streetcars, horses, cars, and pedestrians, but also as playgrounds and gathering places.