Hail a robo-cab, save the planet? Why driverless taxis are good for the environment

If you want to reduce greenhouse gas emissions, consider commuting by robo-cab.
Researchers at the Lawrence Berkeley National Laboratory report that by 2030, traveling by driverless taxi could lower greenhouse gas emissions by as much as 90% compared with the same length ride in a privately-owned gas-powered car today. http://www.latimes.com/science/sciencenow/la-sci-sn-hail-a-robocab-save-the-planet-20150707-story.html
Article courtesy of the Los Angeles Times/Science Now by Deborah Netburn