Comfort and Convenience
Cabin temperature is a good example: one person's comfortable setting is another's too cold. Preferences vary with clothing, where someone sits and how direct sunlight falls, so passengers rarely agree on a single figure.
Safety and Driver Assistance
A few minutes in the car before setting off, locating hazard lights, demisting, wipers and the horn, means these are not being searched for later. Preparation of this kind costs nothing and is easily done while stationary.
Multimedia and Connectivity
Phone battery is the usual concern on a long drive, since navigation runs for hours. If a charging option is available in the cabin, it is worth knowing which cable or method it expects before departure.