Comfort and Convenience
Seating position is a personal matter: height, reach to the wheel and how upright someone prefers to sit all vary, so two people sharing the same car often settle in quite different places.
Safety and Driver Assistance
Time spent before setting off, checking mirror angles and locating the hazard switch and lights, means those things are already known when a busy junction or sudden rain draws attention elsewhere.
Multimedia and Connectivity
Battery level matters on a day of short hops, since a phone used for navigation drains steadily. Where charging is available in the cabin, it is worth treating separately from how calls or music are handled.