[dahdum]

> We are making progress towards stopping at stop signs and traffic lights. This feature is currently operating in “shadow mode” in the fleet, which compares our software algorithm to real-world driver behavior across tens of millions of instances around the world.

It's cool that they can collect that data and no doubt will help refine the feature, but otherwise marketing speak. Says nothing about how accurate their algorithm is or how long it may take. There's nothing stopping them from rolling out an algo for anything and running it in "shadow mode".