How do I make a cd that will work in my car radio?

welp first off your c omputer needs to have a cd drive that has the ability to "burn" music. and size does matter , songs are certain sizes and cds can only hold 700 megabytes, but if your cd drve is able to burn music you can make a playlist in windows mediaplayer then hit the burn tab and transfer your playlist to the burn section (with your cd inserted) you cna hit "start burn" or you can find another program with easier interface i like using "burn4free" its simple and its freeware and effective...make sure your music files are mp3 format its more common used format