Comfort and Convenience
Preferred cabin temperature differs widely, partly because clothing and recent activity vary from one person to the next. Two passengers in the same car often want the airflow set differently.
Safety and Driver Assistance
Time spent learning where hazard lights, mirror controls and the parking brake sit is easiest in a stationary car. Unfamiliar layouts are hardest to explore when traffic is already moving.
Multimedia and Connectivity
A phone that runs flat mid-route stops being useful for navigation, so a charging option matters independently of whether audio or calls are routed through the car at all.