Comfort and Convenience
Preferred cabin temperature varies a lot between people, because clothing, how recently someone has been walking and simple personal sensitivity all differ. Shared journeys usually involve small compromises.
Safety and Driver Assistance
Before setting off it is worth knowing where the hazard lights, wipers and demister are. Locating them calmly while parked means less searching later, when weather or traffic changes.
Multimedia and Connectivity
A phone running low on charge partway through a journey is a common nuisance. Where charging is provided, keeping the battery topped up is a separate question from how calls or music reach the speakers.