Anything as significant as a self-driving car, obviously, needs a ton of testing. And a lot of that testing is being done in a "fake" town at the University of Michigan in Ann Arbor.In a feature in today's Washington Post, write Matt McFarland lift the wraps on this "test" city.

When you think about it, there are so many variables to put in front of self-driving cars. Think back to your own driver's training. If you're old enough to remember the videos they showed in class, with kids darting in to the street, bicyclists swerving, any number of things that weren't likely but could happen.

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