Comfort and Convenience
Preferred cabin temperature is rarely the same for everyone aboard. Body size, clothing and where someone sits relative to sunlight all shift the sensation of warmth, so a setting that suits the driver may not suit others.
Safety and Driver Assistance
Locating lights, wipers, mirrors and hazard switches while still parked takes a moment. Doing so before setting off means attention stays on the road later, rather than on searching for an unfamiliar control.
Multimedia and Connectivity
Phone battery level shapes a journey, since navigation and messaging drain it steadily. Where a charging option is available on board, topping up in transit keeps the device usable on arrival rather than only during the drive.