Last week, Iain and I saw Big Hero 6. It's fantastic. While we watched I thought, "This is as good as Wall-E," and, "Wow."
If you've seen the movie, you know that it revolves in part around an invention that allows you to transport materials through a portal. Iain apparently found that part interesting. Above, he built something similar but he wants it to transport through time, rather than space.
[Here are some pictures of the portal in case you want to see what I'm talking about. It's basically a circle.]
Note that he attached it to the electrical system originally meant for a Lego train set. So it moves. And stuff.