Removal of CD from disconnected CD player

Just a thought, on PC cdrom drives there is a little hole under the drive door, if you stick a paper clip far enough in it opens the door without any power. I believe that on the right side of most car cd players there is a space where you can insert a clip and the cd will pop out. I think this happened to me once and that is how we got it out. Just a thought, don't quote me on this one