Waymo and GM Lead the Self-Driving Car Race, New Data Shows

Some are philosophical: What do we owe the people whose jobs will be annihilated? Do robo cars need ethics lessons? At least one question is practical and philosophical: How do we know when these things are ready to ditch their human safety drivers and roll about unattended? No one has much of a response. You could say that as soon as the robot is safer than the average human driver--who crashes once every 238,000 miles or so--it's wrong to keep it in the lab.