they have started switching the 2022 vehicle's to a android based system, all the electronics, modules, etc communicate via android
personally I think it's a risky move, android is not "glitch free" I think going forward we will start seeing reports of "frozen" or "unresponsive" systems it won't happen all the time but it will be annoying at best.
having to have a subscription is just the start, gm's goal is for no one to ever own a vehicle, eventually they want all vehicles to be "shared" forcing you to pay all the time
however far down the road that is unknown but pushing everything to electric is also the beginning.
no I don't wear a tin foil hat, they basically publish this information already on there various websites
I can foresee various security measures being made, say you didn't pay your bill and you go to charge or drive a vehicle and everyone has to enter a "personal code" well your code is not working, why? because you didn't pay up.
it's all going to be in your "agreement" like software install's on your pc, you don't agree, you don't get to play.
bottom line for now, if you plan to travel anywhere outside of cell coverage carry a stand alone gps like a garmin, etc just in case, you can download portions of google maps to work without cell coverage but it's a limited map and you have to know what area you will need ahead of time obviously if you don't have cell coverage you can't download, it's most likely to happen in the mountains or in sparsely populated or unpopulated area's, cell coverage is strategic you could take a little side road off the highway and be in a dead zone easily.