Hmm, a rice transplanter. That's a thing I didn't realize existed, but it makes sense. TIL. Here's a video of one in action.

@Shinjidude Surprisingly, this isn't the first example of these in the gallery. There are a couple more at post #2323892 and post #2801951. There's no standard tag in use for agricultural machinery so I can't be certain that there aren't others.