Comfort and Convenience
Seating position is personal. Height, leg length and the way someone likes to hold the wheel all pull the ideal setup in different directions, which is why two drivers rarely settle on the same arrangement.
Safety and Driver Assistance
Learning where things are while parked costs nothing. Mirrors, hazard lights and the handbook's location are worth checking before departure, since a quiet moment on the driveway is a better time to find them than a busy junction.
Multimedia and Connectivity
Phone battery is the quiet constraint on a long day, particularly if navigation is running. If a charging option is available, using it keeps the phone usable for calls at the far end.