Comfort and Convenience
Cabin temperature is a good example: some people travel happiest in a cool draught of air, others prefer steady warmth. Build, clothing and the time of year all shift where an individual's comfortable setting lies.
Safety and Driver Assistance
A few quiet minutes before setting off are worth taking: lights, wipers, demisting and hazard warning are easier to find while stationary than in moving traffic. Preparation of that kind simply removes guesswork later.
Multimedia and Connectivity
Keeping a phone charged through a long day is its own need, separate from calls or music. Where a power source is available on board, it matters mainly that the cable reaches a spot where the phone sits securely.