First eight-track players slid off into history. Then that unruly stack of cassette tapes disappeared from glove compartments. Now, car-stereo makers are marketing units that threaten to boot compact discs into the auto audio graveyard. Last Wednesday, Blaupunkt announced it's shipping a second-generation, $160 stereo and AM/FM radio that ditches the CD player in favor of ports for other digital music technologies.

>> Ditching the Disc: Car Stereo Makers Ejecting CDs for iPod-Only Units