Comfort and Convenience
Drivers differ in how close they like to sit to the wheel. Height, arm length and habit all play a part, which is why a position that suits one person feels awkward to the next.
Safety and Driver Assistance
A stationary car is the easy place to learn an unfamiliar layout. Hunting for the hazard switch or a mirror control in moving traffic turns a simple task into a distraction, and preparation avoids that.
Multimedia and Connectivity
Music and spoken content need different things: a playlist can be chosen beforehand, while radio or podcasts may ask for attention mid-route. Where a system supports saved stations or presets, that choosing is done once.