The iPod, along with iTunes, not only destroyed the music industry’s revenue structure — it revolutionized how we listen to music in the car. CD players had finally pushed the tape deck out of the cockpit, only to be nothing more than glorified coasters for many consumers. The MP3 replaced the CD even faster.
Auxiliary jacks with analog capability were a bridge — originally intended to satisfy tape deck lovers — but some brands leapfrogged others by offering USB integration to get all the digital goods out of the iPod with song titles and playlists.
Now, many cars’ iPod integration is so advanced that they display album artwork along with song information.
Some cars have advanced HD Radio that allows drivers to “tag” a song they hear on the radio, and that song is then saved to their iTunes profile to purchase the next time they open their iTunes.