Burning for cd audio/MP3 was obsoleted in favor of MP3 players/ipod and later the smartphone.
For a short while, you could get CD players that also played MP3s burned onto a CD-R. You could put a ton of MP3s on one CD-R. I had lots of BBC radio dramas on them. All lost now, sadly. And there doesn’t seem to be anyone archiving them anymore despite daily dramas.
I recently purchased an old Toyota from 2009, which had the TOTL audio system including an MP3 compatible cd player and Bluetooth (voice/phone-only). I ended up using the cd tray as a slot for a phone holder, and use a Bluetooth LDAC dongle connected to the AUX input. But I’m gonna burn an old school MP3 cd and leave it in the glove box for a rainy day :)