Comfort and Convenience
Seating position is the clearest example. Height, leg length and the way someone prefers to hold the wheel all change what feels natural, so a setting one person settles into at once can suit the next poorly.
Safety and Driver Assistance
Spending a few minutes with the basic controls before setting off is simply preparation. Knowing where the hazard lights, demister and mirror adjustment sit means the first time you need them is not also the first time you look.
Multimedia and Connectivity
Keeping a phone charged through a long day is a need in its own right, separate from calls or music. Where a power source sits within reach of where the phone actually rests, that need is met without improvising.