> the city is much easier to navigate by car. Cities stop being "easy to navigate by car" when they have too many cars around. And car-congested streets are a

> the city is much easier to navigate by car. Cities stop being "easy to navigate by car" when they have too many cars around. And car-congested streets are also very hostile to bikes and pedestrians, so it's very hard to correct the problem once it gets ingrained. So it makes sense to give the latter uses high priority, and keep car use as a rare exception.