Car aerials; Car antennas; Car cassette players; Car navigation computers; Car stereos; Car televisions; Car video recorders; Car videorecorders; Desk or car mounted units incorporating a loudspeaker to allow a telephone handset to be used hands-free; Digital music system that synchronizes digital music files stored on a home unit and a car unit; Digital music systems that synchronizes digital radio files stored on a home unit, a car unit, or portable unit and that may be backed up to an inte...