Comfort and Convenience
Cabin temperature is a good example of how personal comfort is. Body size, clothing and simple habit mean two people in the same car often want different settings, which is why agreeing on it early helps.
Safety and Driver Assistance
Time spent in a stationary car, working out where the hazard lights, demister and headlight settings sit, is time well used. Sorting this in daylight is easier than during rain or unfamiliar night roads.
Multimedia and Connectivity
Keeping a phone charged matters on long drives, since navigation drains a battery quickly. If a suitable power outlet and cable are available, a phone can be topped up en route rather than rationed.