>Google's self driving car group gives some awesome transparency reports every month, including details about every accident

Google isn't doing this out of the goodness of their heart. They have always been required by law to send autonomous vehicle accident reports to the DMV, which are made available to the public on the DMV's website.

https://www.dmv.ca.gov/portal/dmv/detail/vr/autonomous/testi...

So the transparency itself is mandatory. Google merely chose to control the message and get free PR by publishing an abbreviated summary on their website too. Judging by this comment, it's working!

For example, here's the full report on Google's accident in February, the first one where the autonomous car was the vehicle at fault: https://www.dmv.ca.gov/portal/wcm/connect/3946fbb8-e04e-4d52...