Comfort and Convenience
Cabin temperature is the classic example: one person travels warm, another cool, and a single setting rarely suits everyone. Preference shifts with clothing, seating position and how long the journey has already been going.
Safety and Driver Assistance
A short pause before setting off is enough to locate lights, wipers, demisters and the horn. Doing this while parked means the first search for a switch does not happen in moving traffic.
Multimedia and Connectivity
Battery level is the everyday concern on longer trips, since a phone used for navigation drains steadily. Where charging is available, keeping a device topped up is largely a matter of bringing the right cable.