Comfort and Convenience
Cabin temperature is the preference people argue about most. One passenger reaches for fresh air after ten minutes in a car park, another leaves the vents alone, and neither habit is more correct than the other.
Safety and Driver Assistance
Preparation here means setting mirrors and seating position, then locating the main switches, while the car is still stationary. Doing it at the kerb rather than mid-journey turns an awkward fumble into a settled routine.
Multimedia and Connectivity
Hands-free calling is the need that comes up between stops, when a shop or a family member rings. Whether that works through the car depends on its equipment; music playback and a charging supply are separate matters again.