Environmental conditions

▷ Say the commands, numbers, and letters smoothly and with normal volume, emphasis, and speed.
▷ Always say commands in the language of the voice activation system.
▷ When selecting a radio station, use the common pronunciation of the station name:

›Station ...‹ e. g. Classic Radio station ▷ Keep the doors, windows, and glass sunroof closed to prevent noise interference.

▷ Avoid making other noise in the vehicle while speaking.

    See also:

    External temperature
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    Route criteria
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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- ...