A new study shows that sharing cabs could make our taxi system up to 40% more efficient. But, would you really share a cab with a stranger just to save a few bucks (and gallons)? Carlo Ratti, director of the MIT Senseable City Laboratory, and Cornell applied mathematics professor Steve Strogatz co-authored the study that crunches NYC taxi data -- they discuss what it can tell us about the future of getting around in NYC.

A viz of NYC taxi traffic data @crassociati @stevenstrogatz used for cab-sharing study. http://t.co/XOHEOAZ76L pic.twitter.com/BqFsk1F511

— Brian Lehrer Show (@BrianLehrer) September 3, 2014