Driverless cars could transform transportation. How they do it is up to us.
In a few decades, the world could be full of dense urban transit utopias, where individual car ownership is a thing of the past, bikes and public transport are preferred for most trips, and the rides people do take are in tiny, electric, incredibly-efficient taxis.
Or the driverless car could usher in a new era of urban sprawl and car use, sounding the death knell for public transport as people choose to use their own car for longer trips and tolerate longer commutes from the center of the city since they can sleep, work, or watch a movie the whole time.
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