Make sure you don’t bring your phone because your carrier will track your location. Also walk with a fake limp, so gait tracking can’t match you.

All modern cars have cellular connectivity. The manufacturer pays the monthly fee. Since most cara have gps built in, they always know where you are.

When you connect your phone to the car via bluetooth or usb your phone will trust the car and hand over the data. Want to see that message on the car screen? Well the car manufacturer now has a copy of it. In real time.

It should. The esim data is stored in a separate chip.