Comfort and Convenience
Comfort preferences are personal. A seat height that suits one driver's view of the road feels wrong to another, because build, posture and driving habits differ, so a single setting rarely satisfies everyone sharing a car.
Safety and Driver Assistance
Learning where the essential controls sit, such as lights, wipers and demisting, before setting off means less searching later. Preparation is easiest while parked, when there is time to read labels and confirm what each switch does.
Multimedia and Connectivity
Keeping a phone charged during a long errand run is a separate need from playing music or taking a call. Where a socket or a connection is available, knowing which one handles which task saves fumbling.