Comfort and Convenience
On a longer outing, some people like a window cracked for fresh air, while others prefer it closed so the cabin stays still. That choice is personal and can differ between driver and passenger.
Safety and Driver Assistance
Finding the hazard-light switch in a driveway, rather than after joining a busy road, is simple preparation. The same habit applies to the horn and indicator stalk before you move off.
Multimedia and Connectivity
Some people want an audiobook running without picking up the phone. If cabin audio can take that source, the handset can stay put; if not, the phone itself needs to sit within easy reach.