"Cruise (GM's Automation subsidiary) just unveiled its third-generation autonomous prototype, and it claims this version is ready for mass production. [This] new version has enough redundancies and safety features that Cruise feels it could operate in the real world without a driver, unrestricted.
These self-driving cars can still be built on the same Michigan [Bolt] assembly line–meaning that, in theory, GM could crank out thousands of them if they wanted to. That puts GM ahead of most of their rivals."
GM plans to offer retrofit kits to existing Bolt owners who may want their cars to "earn their keep" when not being used for personal transportation.
(OK, the line above I made up )
Details here, here, and here.