Yes, I would be a HUGE advocate of them sharing this data. Autonomous cars can share their data with human drivers in the vicinity to alert them to situations on the road. Perhaps each vehicle (autonomous and human-driven) could contribute to an open network of data that any vehicle in the vicinity can access and process to alert their drivers or take necessary actions to protect the safety of all passengers.

Would be interested in hearing legal opinions about whether this data would only be shared if the individual car owners 'opt in' or if the operator - Google - could mandate the sharing of this data while the cars are on the road.

Trying to think of downsides to an open shared platform of such data.