Joe has all his toy cars -- sorry die-cast models -- in his basement. He also has a full-size slot-car track which goes up into the ceiling. His wife is very proud of his achievement, and so is he, as the video shows. His little girl likes playing with it. He doesn't have a son, which is kinda cruel.
Found via Ikea Hacker, which is a site that's always full of interesting things people have done with boring furniture, which you can look at and then go, Nah. And then go back and sit on your Töfu chair with your feet on the Dldö coffee-table.