Comfort and Convenience
Cabin temperature is rarely agreed on. One person wants airflow at the face, another dislikes any draught, and passengers in the back often feel conditions differently from whoever is setting them at the front.
Safety and Driver Assistance
In an unfamiliar car, the first drive is a poor time to learn where the hazard switch or gear selector sits. Adjusting seat and mirrors while stationary keeps attention available for the road.
Multimedia and Connectivity
Calls are the awkward part of driving. Where hands-free operation is available, it lets a conversation happen without handling the phone; where it is not, the practical answer is to let it ring and return the call later.