Comfort and Convenience
Preferred cabin temperature is rarely unanimous, since people differ in clothing, metabolism and how much direct sun reaches their seat. Settling on a setting before leaving spares everyone the running negotiation over vents and dials mid-journey.
Safety and Driver Assistance
Learning where the essential controls sit, among them lights, wipers, demisting and the hazard switch, is best done while parked rather than in traffic with passengers talking. A few unhurried minutes mean the movements are already familiar when conditions change.
Multimedia and Connectivity
Phone charging is the need that surfaces most on longer trips, since navigation drains a battery quickly. If a suitable socket or pad is available, one cable kept in the car saves borrowing between passengers.