Tesla can read your music from USB flash drives. This is wonderful, because they have a premium audio system (used to cost $2500) and you could play high-quality music.
You could load a drive with FLAC or Apple Lossless music and play it back without MP3 lossiness and artifacts.
Yet album art? they do not care.
Here's a thread on how the USB player is a buggy unsupported mess. It recently lost the ability to display album art, but there are plenty of other problems (like no playlist support or any number of other problems)
https://teslamotorsclub.com/tmc/threads/comprehensive-usb-bu...
This thread has > 2000 posts going back 5 years and it is updated almost daily.