Comfort and Convenience
Cabin temperature is a personal matter: one person finds a setting pleasant while a passenger beside them reaches for a jacket. Clothing, time of day and how recently someone was walking outside all play a part.
Safety and Driver Assistance
A few minutes spent with the handbook and the dashboard symbols before setting off turns unfamiliar icons into recognisable information. Preparation of this kind costs nothing and is easiest done when the car is stationary.
Multimedia and Connectivity
Hands-free calling is the function many people want most on errand runs, since arrangements often change mid-trip. Where such a system is present, it keeps a conversation going without the phone leaving its holder.