Comfort and Convenience
Seating position is a good example: some people prefer sitting high and upright for a clear view, others lower and more reclined. Height, build and the length of a typical journey all push that choice in different directions.
Safety and Driver Assistance
Before setting off in an unfamiliar car, it is worth locating the lights, wipers, hazard switch and demister. Doing that while stationary means an unexpected shower or early dusk does not turn into a fumble.
Multimedia and Connectivity
Keeping a phone charged on longer drives is a common need, and where any available power outlet sits decides how tidy the cable run is. A lead that blocks a cupholder quickly becomes irritating.