Sorry, do you mind if I ask what model of car and laptop do you usually use at the moment.
My phone is a Pixel 7a running GrapheneOS. My laptop is a Thinkpad T80s running Debian Stable, and I'm waiting for my Framework 16 to ship. My vehicle for out-of-town trips is a GR Corolla, but for around-town stuff I use a custom steel frame e-bike.
When I have the time and energy I try to protect my privacy. For the GR Corolla I followed some steps* that might have done the job, but I can't say for sure. This summer I hope I have time to play with the hardware, up to and including replacing the headunit with something OSS-based.
* https://www.grcorollaforum.com/threads/sos-call-disable.2357...