Comfort and Convenience
Seating position is a personal preference: some drivers sit upright and close, others further back with arms extended. The same cabin therefore suits two people differently, which is why settings are worth adjusting rather than left as found.
Safety and Driver Assistance
Learning where the lights, wipers and hazard switch sit is best done while parked. Searching for a control mid-journey divides attention, so a minute of preparation before setting off keeps routine actions routine.
Multimedia and Connectivity
Keeping a phone charged during a long drive is a separate need from playing music or taking calls; whichever sockets or connections a car offers, it helps to know which one does what.