Manhattan would need 48 new bridges if everyone drove. Here's what it would look like - Vox:
A single visit to Manhattan makes it pretty obvious that most people
there depend on the subway, buses, bikes, cabs, and walking for
transportation. Just 16 percent of people who commute into Manhattan for work do so by car — by far, the lowest percentage of any US city.
But what would Manhattan look like if everyone drove into the city instead of taking public transport?