A later tweet in that thread shows this image:Cruise is now 24/7 in all of SF.
Here’s what that really means as I understand it. They have apparently tested the cars with human supervision across the full city map shown in Kyle’s first tweet and found the current system to be sufficiently ready.
For actual “driverless” use, they are currently testing the “Cruisers 24/7” map shown in the later tweet with a group of employee test riders. The “Power Users 24/7” daytime and nighttime maps show the areas currently available to a group of non-employee test riders.
I’m a member of the Power Users group and have been taking some daytime rides since they became available to me a couple of weeks ago.
I plan to post something here about my daytime experiences with Cruise in the next day or two.