CD audio format most likely to work in car?

belledomine

Estimable
Sep 6, 2014
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The mp3 CD my friend burned won't play in his car (but does in mine) so he wants me to burn one that works. We don't know what kind of CD player he has. Is there a universal file type that will work in all car CD players, or one most likely to work? What's the best bet for me to make the other settings? Thank you very much.