Requiring a cell phone to replicate features a car should have just makes more problems IMO.

But almost every smartphone already has those features, they work fairly well, and it makes more sense for a phone to have those features than a car. (Because sometimes it's useful to know where traffic is when you're not in a car, and stream things while walking around.) It doesn't make much sense for each car manufacturer to replicate everything if they can figure out how to connect a phone to a car, and borrow the phone's features.