Comfort and Convenience
Cabin temperature is a good example: some travellers prefer cool, brisk airflow, others a steadier warmth. Height, clothing and where someone sits all shape the preference, so agreeing a setting early avoids repeated adjustment.
Safety and Driver Assistance
Learning where the basic controls sit, such as wipers, lights, demist and the hazard switch, is worth doing while parked. Searching for them at speed, in rain or dusk, is when attention is least available.
Multimedia and Connectivity
Phone battery is the usual constraint on a long drive, since navigation and screen time drain it steadily. If charging is available on board, a suitable cable matters; otherwise a power bank covers the gap.