Comfort and Convenience
Preferred cabin temperature rarely matches between two people. One occupant may want steady airflow towards the face; someone sharing the same journey may find that setting chilly and prefer air directed lower.
Safety and Driver Assistance
A few minutes before setting off is a sensible time to set the mirrors and see how the indicator and hazard switches respond. Preparation of this kind belongs before travel, not during it.
Multimedia and Connectivity
Taking calls without holding a phone is a frequent requirement. Where hands-free telephony is supported, speech usually plays through the speakers, which is a separate matter from how music is chosen.