« Why did Uber launch the self-driving in pilot in San Francisco if it knew it was in violation of the law? A likely scenario was that Uber didn’t want to disclose its disengagement rate — the number of times the vehicle forced the human driver to take control because it couldn’t safely navigate the conditions on the road — or any accidents to the DMV, and by extension the public ».

Source : Uber dismissed warnings about its illegal self-driving test for months, emails show – The Verge