Comfort and Convenience
Preferred cabin temperature is a clear example: build, clothing and whether someone is driving or sitting still all change how warm a space feels, so two people on one journey often want different settings.
Safety and Driver Assistance
A few minutes before setting off spent locating the hazard lights, demister and mirror adjustment means less searching later. Preparation here is simply knowing where things are, which counts for more when the route or the weather is unfamiliar.
Multimedia and Connectivity
Keeping a phone charged across a long drive is a separate need from playing music through the speakers. Where a charging point is provided and sits within easy reach, the phone can stay powered instead of occupying someone's lap.