The use of an auto-changer or jukebox can make optical discs a feasible option for larger-scale backup systems.
From the en.wikipedia.org
Convenience package is $3,500 and includes rearview camera, CD changer, Bluetooth phone connectivity, auto-dimming mirrors.
From the usatoday.com
With the Ghia, you get larger alloys, automatic headlights and rain-sensing wipers, power fold door mirrors, a Sony stereo with six CD in-dash auto-changer.