In my GM car I have the wonderful opportunity to pull the OnStar fuse and disable all cellular connectivity. However, I am concerned the telematics information are stored in long term storage and if I have to reconnect the fuse, all my driving will be batch uploaded. I hope not!! And the GPS still works. Maybe I can find some dummy loads as well or the antennae.
It's still better than other modern cars though? I think.
If you are willing to lose GPS, maybe you could set the car's internal clock to the year 2000. This might fool a cursory data dump that is looking for "last three months of driving habits". Would obviously not stand up to any real scrutiny, but mostly painless.
GPS provides the time, so this probably won't work. If it ever reconnects it will just reset its clock. That's often one of the first things that any computer does after a long period of no power/connection.
I did say lose the GPS.
GP was talking about reconnecting the system. Is GPS separate?
The systems must be separate if they were able to disable some of the network connectivity but maintain GPS.
I thought GP was talking about if they had to reconnect the systems for some reason, would archived telemetry suddenly be uploaded. Which is a real possibility, so I was suggesting poisoning the data. Even if you correct the clock today, the previously recorded timestamps cannot be automatically fixed. Even better would be to reset the clock on every startup event.
Which is all still a band-aid solution - a targeted analysis could mostly correct the time-keeping. This just prevents getting scooped up in a simple drag net kind of search.