Build a Cable Car over the streets of New York City. Not the rives, but the streets of Manhattan.

New York City is a big conspicuous place, but transportation is kind of dull and causes lots of air pollution. So Build a Tramway. Put the towers on top the buildings and put tram stations on the side of the street. The Union of Concerned Scientist Say"In 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air". But tramways use electricity. Its Like a slower but more green Car in the sky. Also A The Cable car can hold over 15, while the average car can hold 4 to 6. So build and use tramways.