Comfort and Convenience
Preferred cabin temperature is an everyday example. Some people travel warm and still, others want constant airflow, and the same setting rarely suits everybody, since clothing, the time of year and simple habit all differ from person to person.
Safety and Driver Assistance
Spending a few minutes stationary with wipers, lights and mirrors is ordinary preparation. Doing it before setting off means these things are already located when they are needed, rather than being looked for on the move.
Multimedia and Connectivity
Keeping a phone charged on a long day is its own need, separate from calls or music. If a charging option is available in the cabin, where it sits decides whether the cable stays out of the way.