Comfort and Convenience
Cabin temperature is a personal matter: some travellers want steady warmth, others prefer cooler air with constant airflow. Height, clothing and how long someone has been sitting all shift the preference, so agree settings early.
Safety and Driver Assistance
Before a long trip it helps to locate lights, wipers and demisting controls while parked. Finding them by habit rather than by searching keeps a driver's attention where it belongs on unfamiliar roads.
Multimedia and Connectivity
Phone battery life shapes a long day, since navigation drains it quickly. If a charging point is available on board, a suitable cable matters as much as the socket; music and calls are separate questions.