Four guys search to the edge of the internet for the latest, greatest stuff on the web
Yes, kinda. It is displaying principles of a type of hydraulic shuttle valve. Keep in mind that this is the principle idea not a working valve.
its the mechanics of a train.
I've seen a couple of these made as simple children's toys. The whole thing can be made out of wood if you do it right.
It's marketed as the "Redneck Entertainment Center"