Google's self-driving car gets a test drive -- more like a test-ride -- from Steve Mahan, a man who has lost 95% of his vision.
For most of us, a self-driving car would be incredibly convenient, but for Mahan, it represents independence.
Behind the wheel of the autonomous vehicle, he's able to successfully run errands and grab a burrito at the drive-thru despite being "well past legally blind."
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