I think we may not see phone as key from GM, although Tesla does it, and they don't support CarPlay, either.
GM has already announced that the first generation AAOS system will have a free trial of maps and some other things, and then become a required subscription (no navigation without subscription, and no way to bypass it short of a vent mounted phone). For the first generation, the free trial is LONG (eight years), but GM has a habit of shortening those trials as a model's life goes on, not for existing cars but a new model year will have a shorter trial than the last. I've owned two Volts, and the first one (2014) had a five (or was it ten) year trial of a lot of OnStar features, including the car's app. The second one (2017, my current vehicle) had a one-year trial. I live without the app, not wanting to pay for OnStar. I suspect that a 2026 or 2027 Blazer will have a one-year navigation trial that leads into a subscription (and nav is a lot harder to bypass safely than an app in a 2017 car). With a six-year-old (non-Tesla) car, the app is a convenience, but not a necessity. In a very new car or a Tesla, you need the app. Vent mounts really are a heck of a lot less safe than having nav on the car's screen.
Is this REALLY good news for Garmin, because dash mount GPSs will suddenly become widely relevant again?
Another question this brings up is whether the nav will be "log in to use". Google would love to force us to log in to a Google account, and GM could say that, since Google accounts are free, it's not an extra charge. This causes two problems. One is rental cars (rental agencies could create a whole bunch of Google accounts and log all the cars into nonsense accounts, but they may not be that smart) - if the cars aren't logged in to fake accounts, there's an enormous risk of someone leaving their Google account in a rental.
The other problem is that many people (including me) are VERY careful with Google. I have gmail, but I read it in a mail program and not a browser to avoid Google's cookies (which they bake to Vladimir Putin's recipe, complete with poison). I use Google search, but, again, not logged in. If I ever have to log in to Google in a browser, I immediately quit Safari (I won't even THINK of using Chrome), letting Cookie do its thing. For anyone who doesn't know, Cookie is a commercial, but relatively cheap, cookie manager. I have it set to delete most cookies on sight, especially Google, Facebook/Meta, Amazon, etc. I check my cookie list every few days and make sure none of those are on there (I let the New York Times keep a cookie, and a few others, although I kill their ad tracking cookies as well). You can't run a cookie manager on a car head unit, so Google could collect data from a continuous login, and tie it to an account. The privacy implications are terrifying.
Depending on your situation, do you want Google knowing (and showing any cop who asks nicely) whether you've been to the abortion clinic, the gun shop, the marijuana dispensary? If you live in Alabama, do you want them knowing you frequent Democratic HQ or a Pride parade? If you live in Massachusetts, do you want them knowing you've been to a Trump rally? Even if you think those companies would never do anything malicious, do you trust their algorithms never to get it wrong? Facebook, another massive data vacuum, once sold the membership list of a private LGBTQ+ teen support group to the local Evangelical church, with no human ever seeing the transaction - the church simply searched and bought online. At least one person committed suicide after being bombarded with conversion therapy ads telling them they were going to Hell. That could just as easily be turned around - if you're Evangelical, do you want ACT UP to be able to buy your church membership list and send you a billion explicit ads?
On another part of the story, I agree with the folks who say infotainment is getting to be too much, and want more knobs and buttons. Unfortunately, cars have acquired so many controls that many of them simply HAVE to be tucked away in menus. This happened to airliners about 25 years ago...
Here's the cockpit of an early 747, pre-glass cockpit.
View attachment 2327219
And here's a modern 787 Dreamliner, with touch screens reducing the number of buttons and dials by 90% or so
View attachment 2327218
Note that the Dreamliner still has physical controls for the things the pilots use often (and that's what car makers need to master)...