Here’s a discussion on Quora about Telsa’s ability to remotely shut off its cars:
https://www.quora.com/Why-doesnt-Tesla-stop-stolen-cars-by-deactivating-them-They-have-the-ability-to-disable-a-car-remotely-If-one-is-stolen-they-can-have-it-shut-off-as-soon-as-it-is-not-moving#:~:text=First%20of%20all%2C%20the%20company,not%20to%20be%20used%20lightly.