See also:

The concept
The central locking system becomes active when the driver's door is closed. The system simultaneously engages and releases the locks on the following: ▷ Doors. ▷ Trunk lid. ▷ ...

Contacts
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The Appendage Factor
M cars have had what I call a high appendage factor — the feeling that the car is an extension of the driver. It's typically experienced in cars whose various systems and characteristics are well- ...