Comfort and Convenience
Seating preference is personal: height, reach and how upright someone chooses to sit vary with build and habit, so a position that suits one driver can feel wrong to the next. Passengers often weigh things differently again.
Safety and Driver Assistance
Spending a minute before setting off to locate lights, wipers, the hazard switch and the mirror adjusters means fewer distractions later. Preparation here is simply about knowing where things are, rather than working them out while moving.
Multimedia and Connectivity
Keeping a phone charged on a long trip is a separate need from playing music or handling calls, and each may depend on a different connection. Knowing which functions are available beforehand saves fiddling at the roadside.