https://qz.com/1220576/the-race-to-build-a-self-driving-car-charted/

Earlier this week, the California department of motor vehicles announced it would grant permits for fully autonomous cars on the road starting in April. By this spring, there could be cars driving themselves in the Golden State without a single human inside.

California has been active in setting rules for autonomous-car companies, requiring reports from each company tracking how far they’ve driven and how often their cars have had to “disengage” during test drives. Disengagement is when a human test-rider feels uncomfortable or unsure of what the car is doing, and he or she takes the wheel and shuts down the automated driving system. These reports are valuable, because if one of Waymo’s test drivers is uncomfortable with the car’s behavior, it’s reasonable to assume you might be too.