Comfort and Convenience
Lumbar preference varies because lower back curvature differs from one person to the next; a setting that feels right for one driver may sit too high or too low for another.
Safety and Driver Assistance
Practicing mirror adjustment before moving helps establish a clear view of adjacent lanes, since awkward angles can hide nearby traffic and force a second look while driving.
Multimedia and Connectivity
Hands-free calling matters most in slow traffic, while a passenger may simply want to play their own playlist, so separating these needs avoids confusion about available inputs.