Waymo
Waymo reported that it had 0.2 disengagements per 1,000 miles driven 2015. That's down from 0.8 disengagements per 1,000 miles in 2015.
In the self-driving car world, a "disengagement" is when a human tester has to take over from the automated driving system.
Another promising stat in the report: Waymo's cars drove more miles in 2016 (635,868) versus 2015 (424,331).
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