This is very good news!
https://www.gm-trucks.com/ultium-cells-llc-marks-first-production-battery-cells-milestone-at-spring-hill-facility/
Ultium Cells LLC, a joint venture between General Motors and LG Energy Solution, has reached a significant milestone in its Spring Hill facility by...
Ultium LLC has announced publicly that it has already started production of batteries for the Hummer EV SUT and SUV.
https://www.freep.com/story/money/cars/general-motors/2022/08/31/gm-batteries-ohio-plant-hummer-ev/65466256007/#l7i0w73ead13z7xee0u