Is it possible to jailbreak those privacy invading cars? Is it possible to : - not subscribe to "on Star" and its equivalents - unplug the modem in the car

Is it possible to jailbreak those privacy invading cars? Is it possible to : - not subscribe to "on Star" and its equivalents - unplug the modem in the car - use the infotainment without sharing data. What happen if I block the cameras and disconnect the modem antenna ?