Comfort and Convenience
People rarely agree on cabin temperature. What one passenger calls pleasantly warm another finds stuffy, partly because clothing, activity beforehand and individual circulation differ, which is why the same setting suits a car's occupants unevenly.
Safety and Driver Assistance
A stationary car is where mirrors, seat and steering position can be set without anything else competing for attention. The same is true of locating indicators and hazard lights in an unfamiliar layout.
Multimedia and Connectivity
Hands-free calling and music playback are different functions. Where the car supports calls through its own speakers and microphone, the phone can stay put; playing stored audio may rely on a separate arrangement.