[shoo_pl]

This.

For a several years now, all new cars sold in EU must have an S.O.S. button that will call emergency services. As a result each and every car has some sort of SIM card built-in and a cellular plan that works across entire Europe.

This SIM card must be free, but its a gateway to things like upselling (pay us $XX and get a wifi in your car) and also a way for the manufacturer to have always-on connection with the car.

Some manufacturers (KIA/Hyundai, Ford, Toyota) offer complimentary free app that you can use to check car location, open/close it, turn on AC (hybrid/ev) etc. with option for more paid features.

Edit: As for the speed limit, its also Europe regulation from this year - car must know the speed limit and beep if you exceed it. Different manufacturers do it differently, but since this has been optional feature for so many years in every car, all manufacturers had this ready - and its mostly based on built-in navigation + road sign recognition. It could use cellular but since this has been feature for so long I don't think this is how it works in majority cases.