See also:

Main iPod menu
iPod menu Random Scan Audio settings ...

Current speed in km/h (U.S. models only)
This function provides the driver with an instantaneous conversion of the car's current speed from mph to km/h. ...

Scanning
SCAN automatically searches through the list of satellite channels. The search will only be carried out in the selected category, see page 215 for more detailed information on the scan functio ...