The hijack HTML screen can only display playlists and their contents.

Emplode and Jemplode will also display the Soup views. Those will not appear in playlists.

Is that the problem you're having?

Note that the Soup views can't be played on the car player yet unless you perform an alphanumeric search. The "playlists" menu on the player can only play playlists. See here for more information about the Soup.

Also, what version of Hijack are you running?