Comfort and Convenience
On a cold morning school run, some people like a warm cabin while others prefer cooler air, because heat tolerance varies from person to person.
Safety and Driver Assistance
Familiarity with the demister and indicator stalks, gained while parked before a foggy dawn commute, makes later use a habit rather than a search while moving.
Multimedia and Connectivity
During a lunch break in a car park, a short incoming call is a common need. If hands-free calling is available, the call can stay in the cabin.