Comfort and Convenience
Cabin temperature divides people more than most settings. What feels pleasantly warm to one passenger can feel stuffy to another, since clothing, time of day and personal tolerance all shift the comfortable range.
Safety and Driver Assistance
Preparation is easier while the car is stationary: mirrors set, seat position settled, and the main display layout looked over once. Hunting for a function in traffic turns a simple task into a distraction.
Multimedia and Connectivity
Calls arriving mid-journey are the usual test. If a hands-free function is present and the phone has been paired beforehand, answering stays a single action; otherwise the sensible choice is to let it wait.