Comfort and Convenience
Seating preferences vary with height and build, so one driver's ideal distance from the wheel rarely suits the next person. Cabin comfort is therefore usually discussed as a matter of personal fit.
Safety and Driver Assistance
Finding where the lights, wipers and hazard switch sit before setting off leaves one less thing to work out later. A stationary minute is the easiest time to get acquainted.
Multimedia and Connectivity
Keeping a phone charged on a long drive is a separate question from playing music through the speakers, and separate again from handling calls. Each may depend on a different connection.