Comfort and Convenience
Preferred cabin temperature varies widely, and one person is comfortable where another feels stifled. Clothing, time of day and simple individual tolerance to warmth all feed into where someone chooses to set it.
Safety and Driver Assistance
A driver new to a particular car benefits from a stationary minute spent setting the seat and mirrors and checking how the gear selector and parking brake operate. Familiarity comes more easily parked than in traffic.
Multimedia and Connectivity
Calls arriving mid-journey are common, and the practical concern is handling them without picking the phone up. Where hands-free calling is available it answers that need; charging and audio playback remain separate matters.