They also train in simulation, where they modify real scenarios to run through variations and edge cases. [1] As of last year, they'd driven 15 billion miles i

They also train in simulation, where they modify real scenarios to run through variations and edge cases. [1] As of last year, they'd driven 15 billion miles in simulation - which is more than a typical person will drive in a million years. Still a ways to go to get to a billion though. [1] https://blog.waymo.com/2020/04/off-road-but-not-offline--simulation27.html https://blog.waymo.com/2020/04/off-road-but-not-offline--sim...