Imagine it's April 2018 and Waymo releases this statement:

"In the past year our autonomous cars have driven a total of 50 million miles in real-world conditions. Over that period there were 4 collisions, plus an estimated 12 which would have occurred if our trained staff in the drivers seat had not intervened. Insurance analysts estimate that if human drivers had driven under similar conditions there would have been 51 collisions."

Would that be sufficient for you to support the introduction of Level 4 automation?