Comfort and Convenience
Seating position is a personal preference: some drivers sit high for a wide view down the road, others lower and further back. Body proportions and long habit explain why no single posture suits everyone.
Safety and Driver Assistance
Before a journey it is worth locating the lighting, wiper and hazard controls while stationary. Searching for something in motion divides attention, and a calm check beforehand simply removes that small hunt.
Multimedia and Connectivity
Taking a call without handling the phone is the common need. Where hands-free calling is available, the useful part is knowing in advance which control answers, rather than searching once the phone rings.