Seems the car manufactures jumped over one important bit: that it is necessary for the vehicle computer to be always connected and listening for incoming connec

Seems the car manufactures jumped over one important bit: that it is necessary for the vehicle computer to be always connected and listening for incoming connections. I'm merely a consumer of automotive technology, so perhaps I do not understand the engineering need for this. Convenience functions like "remote start" and ability to poll remote stats? Something else?