No its a thick elastic loop, the tablets held on by the front of the tablet case being flipped over to the back and tucked in behind the elastic. I only use the tablet for a sat nav on long journeys so wanted something I could remove easily. I just keep the elastic loop in the armrest. The elastic loop is held together by iron on wonder web, so the back side looks a bit ghetto, but you can't see it. The other option would be to sew it together but i'm a man.
That's a really good idea, I don't use mine all that much either so something like this would be perfect