We made this for Matt's Father's Day gift a couple years ago. He hadn't used it yet, and the kids remembered it this afternoon and dug it out. So he got a form of backrub with cars and trains zooming around "Merrellville", complete with a hospital and it's helicopter pad, on his back!
(Peter got in on the action later on, and turned out to be Matt's favorite because he pushed harder than the other kids. In this picture, you can see his back; he's seated at the piano.)