Models of NYC traffic show that increasing the number of cabs would not cause a proportional decrease in the number of private cars, and that the congestion wou

Models of NYC traffic show that increasing the number of cabs would not cause a proportional decrease in the number of private cars, and that the congestion would make the average taxi trip take longer, even including the time spent waiting for a taxi. http://www.npr.org/blogs/money/2012/07/31/157477611/does-new-york-city-need-more-taxis http://www.npr.org/blogs/money/2012/07/31/157477611/does-new...