Comfort and Convenience
On a grocery stop after work, some occupants like a warmer cabin while others prefer cooler air, because people differ in how they feel after carrying bags from the shop.
Safety and Driver Assistance
Before setting off for a library return in rain, locating the wiper and demister switches while still parked avoids searching for them later when both hands are already occupied.
Multimedia and Connectivity
On a pharmacy run, a passenger may need to hear a short voice note from a phone. That listening task is distinct from a call or charging, and it helps only if playback can start while parked.