Close the windows and glass sunroof

Driving with the glass sunroof and windows open results in increased air resistance and raises fuel consumption.

    See also:

    Remove unnecessary cargo
    Additional weight increases fuel consumption. ...

    Messages
    Information about messages. ...

    DTMF suffix dialing
    DTMF suffix dialing can be used for gaining access to network services or for controlling devices, e.g., to make a remote inquiry of an answering machine. The DTMF code is needed for this purp ...