It doesn't help that you image doesn't actually show any Name, Artist, or Album fields, but do you perhaps mean the Car Radio buttons/tab. You can attach Playlists to those buttons, and they sit between the Cover Art and the Tracks details panes in Playing Now.
See the attached image.
If the image shows what you are talking about, you may have turned off the Car Radio feature. Turn it back on in "Options > General > Features > Car Radio".