Or remotely nerf your car if you miss a few payments?
It won't matter if you participate or not - the sensors are a miasma that surround you, and your behavior will be captured and inferred anyway.
The world of Enemy of the State (prescient film) is real [1].
Just wait until we get DNA sensors that capture the air and endothelial cells you exhale [2]. Those are coming too. Perhaps a lot like the ones in GATTACA.
[1] https://en.wikipedia.org/wiki/Enemy_of_the_State_(film)
[2] https://www.theguardian.com/environment/2023/jun/05/airborne...
No antenna. No signal. No datalink.
But yeah, no guarantees that this is possible, or terminating all external antenna connectors is sufficient.
I can put my car in offline mode (blue link).