Car audio has come a long way since the 8-Track tape cartridge moved it beyond merely being a platform for AM and, if you were lucky, FM radio.
It's been a long journey, through cassettes to DVD-Audio and digital file playback – including the newer capability of streaming via Bluetooth. The playback medium doesn't necessarily equate to the quality of the sound, however – for instance, an MP3 file can sound really good or really lousy depending upon the quality of the original file or of how it's processed.
