Oh wow, that's crazy. I've only been to Tokyo, where they weren't out of place, but out in the fields? Sounds like quite the sight.
It's actually quite enjoyable, as you get to run your fingers through warm rice pouring out from the machine.
The first time I saw one, I was probably ~6 years old and my grandfather stopped by on our way home to mill some of the rice he had grown. I was confused since growing up in the States, I had never seen non-white rice until that point.
haha, I've just realized I know you. Will have to ask you where it is sometime. Small World.
Close to where we used to live, by the bus stop in Hiratsuka, when I used to come back at night, the vending machine was brighter than the public lights.