Comfort and Convenience
Comfort preferences vary because people differ in height, build and posture, so the seating position that suits one driver can feel wrong to another. Where a car is shared, each person tends to settle on a slightly different arrangement.
Safety and Driver Assistance
Knowing where the lights, wipers and hazard switch sit means reaching for them without searching. That familiarity is easiest to build while parked, rather than in the middle of a journey.
Multimedia and Connectivity
Charging, calls and music are separate needs: a cable that powers a phone does not necessarily carry audio. Where hands-free calling is available, it is usually set up once and then remembered.