> If it could scale up and still operate the same way... Once they scale up, they will be encountering more other Waymo cars on the roads, eliminating a lot of

> If it could scale up and still operate the same way... Once they scale up, they will be encountering more other Waymo cars on the roads, eliminating a lot of the accidents where someone else crashed into Waymo, or made an upredictable move. So then they could afford to drive less conservatively. We are pretty sure that our roads would be much safer if all cars were self-driving, but that cannot happen overnight and there will be an interim phase when robo-cars have to mix with human drivers, which is the hard engineering challenge.