While it has cute aspects it's also a very cheap, elegant solution to automation on a whiteboard which most people probably think of as out of reach.
It's somebody's project, not a cat video.
It's somebody's project, not a cat video.
If you're willing to think about it for a little while, there's much beyond shallow interest.
Snarky answer: Would you consider toy railroads relevant to hackers? http://en.wikipedia.org/wiki/Tech_Model_Railroad_Club