Comfort and Convenience
Seating position is a personal preference: leg length, height and how upright someone likes to sit all differ, so the arrangement one traveller settles on rarely suits the next person exactly.
Safety and Driver Assistance
A few minutes in the parked car, finding the hazard switch, the wiper and light stalks and the demist function, means less searching later. Preparation is simply about knowing the layout before conditions change.
Multimedia and Connectivity
A phone used for navigation drains steadily, so keeping it powered for the whole route is worth planning; bring a cable suited to whatever charging provision the car offers. Calls and audio playback are separate functions.