http://www.slate.com/articles/technology/future_tense/2015/05/autonomous_cars_and_the_future_of_the_commute.html

Speculation about the autonomous car—when it will become available to consumers, how it will affect the way we live, what it will mean for auto ownership—is so widespread that it's now almost a journalistic genre unto itself. There's good reason for all this conjecture: The jump from human- to software-controlled driving represents not the typical, incremental improvement to the automobile that accrues with every passing model year, but rather a massive, qualitative change in the way we get around.