I've analyzed Taxi & Limousine Commission trip and vehicle odometer records to see how this translates to the streets of New York. The results: On-demand ride companies drove 600 million miles on New York City streets in 2016 — more than the same year's total yellow cab mileage in Manhatta n. Most of the added driving is in Manhattan and congested parts of Brooklyn and Queens near the East River, piling more cars onto already crowded streets.