I had never heard of this tiny pre-Minica kei van prior to reading about it on the Japanese Nostalgic Car forums, but now I must have one!
Unfortunately, you probably have to go to Japan to find one, and even then you'll probably have to drag one out of a field, as this crazy ambitious Project Car Hell Poster Child has done. Load capacity is 300 kilos, engine is a 359cc air-cooled two-stroker, and it's rear-wheel-drive with four-on-the-floor. It now runs and appears to be well on the way to a full restoration. Thanks to Joe Hardrock for the tip!
[Japanese Nostalgic Car]