Comfort and Convenience
Seating position is a personal preference: height, leg length and posture habits differ, so a setting one driver finds natural can feel wrong to another sharing the same car. Long trips simply give those differences more time to show.
Safety and Driver Assistance
Before setting off, it helps to know where the ordinary controls sit, such as lights, wipers, demisting and mirrors, so attention stays on the route rather than on searching for a switch mid-journey.
Multimedia and Connectivity
Battery life matters over a long day, so many travellers plan how a phone will be kept charged. That is a separate question from making calls or playing music, which depend on whichever connection the car supports.