Comfort and Convenience
Cabin temperature is a preference that differs widely: what one person finds pleasant can feel cool to someone sitting alongside. Clothing, time of day and individual circulation all contribute to that variation.
Safety and Driver Assistance
Seat, mirror and steering adjustments are simpler to make while stationary than mid-journey. The same logic covers choosing a route or setting up a phone: these are tasks for before the car moves.
Multimedia and Connectivity
Hands-free calling and listening to music are distinct needs. A call depends on a clear microphone and speaker path, while audio may come from a different source, and charging depends on an available socket.