Japan has two car markets; one for ‘normal’ cars like Corollas, Crowns and suchlike, and the other – the kei class – for vehicles such as these two.

Designed to ensure that car ownership in Japan’s tight streets and congested cities doesn’t completely break the road network, kei cars must measure less than 3.4m in length, 1.48m in width, and have an engine no bigger than 660cc (if powered by an internal combustion engine).

Denoted by their yellow number plates, kei cars benefit from lower taxation than regular cars, but they must comply with reduced speed limits too. Although that’s probably so they don’t fall over.

Over one in three cars sold in Japan are in the kei class, and the specs can be wild, with turbocharging, all-wheel-drive, and even convertible sports cars available.

Most kei cars however, look like these two; a box measuring exactly 3.4m long and 1.48m wide, precisely maximising the interior space within the permitted exterior dimensions.

The Daihatsu Move Canbus and the Honda N-Box Slash pictured here are both the work of Flickr’s Ralph Savelsberg, who has constructed them in his trademark Miniland style.

Each packs as much detail as possible into a tiny package, which is appropriate, and there’s more of each build to see at Ralph’s photostream. Click the link above to see what’s inside the box.