Comfort and Convenience
Seating preferences differ because height, leg length and posture vary between people. A position that suits one driver can leave another reaching for the wheel or sitting more upright than they would like.
Safety and Driver Assistance
Knowing where the lights, wipers and hazard switch sit before setting off means less searching once traffic begins. Familiarity of this kind is easiest to build while parked, when attention is not divided.
Multimedia and Connectivity
Keeping a phone charged on a long drive is a separate need from playing music or handling calls. A charging point supplies power only; audio and calls depend on whatever connection the system supports.