Sure, that technology is available and in many cases is deployed by automakers around the world, and it is increasingly demanded by automakers in their relationship with law enforcement where they're sharing data. Those automakers then share that data, and that drives the R and D and procurement with suppliers.
Comparing your phone to a vehicle, where the differences come in is that your phone is usually a personal item tied to you, and every time you do a software update or an app, there are questions. You get a request of whether you'll allow it to track you, etc.
A vehicle is used by multiple people, multiple drivers, passengers who aren't involved in an ownership relationship there. I think the question of whether the technology exists is settled—it's there, it can be deployed. It's a question of whether as a society we are prepared—owners are prepared, passengers are prepared—to give permissions that infringe on a lot of different things in the umbrella of privacy in exchange for a more secure relationship with your car, your friend's car, a car you're in, a ride-share or a car that you're frankly just walking beside. Sensors are not just internal, they're also external.
It's a wider societal conversation that's happening in a different silo from the conversation we're having about theft security on most vehicles.