Not to mention the value of the land that is set aside for roads and parking. How much property tax is the city forgoing by dedicating that land to cars rather

Not to mention the value of the land that is set aside for roads and parking. How much property tax is the city forgoing by dedicating that land to cars rather than homes or offices? How much cheaper would our costs of living be? Also, a major reason costs of construction and maintenance on public transportation are so high is that they have to do it in a way that minimizes the disruption to car traffic. Yes roads are cheaper to build than subways, but if they could shut down a whole street and build light rail at surface grade it would be a lot cheaper (which is why streetcars and cablecars were ubiquitous a century ago). Or if they could shut down 4th street for a year, the Central Subway would be done already.