Comfort and Convenience
Cabin temperature is a good example: the same setting can feel warm to one person and cool to another, because build, clothing and seat position all change how air reaches each occupant.
Safety and Driver Assistance
Spending a moment before setting off to locate lights, wipers, mirrors and hazard switches is worthwhile, particularly in an unfamiliar car. Knowing where they are means less searching once the journey is underway.
Multimedia and Connectivity
Keeping a phone charged during a long trip is a practical concern, since navigation drains a battery. Where a car offers a power source within reach, a passenger can manage the cable instead of the driver.