A ridiculously simple tiny papercraft car
ペーパークラフト「車」の作り方(ぬりえタイプ)|mama life blog
http://pojieblog.com/paper-craft-car/
Another simple boxy car like model
https://passtell.jp/20080620/9043/
https://passtell.jp/20080620/9011/
Hamada fire trucks
https://www.city.hamada.shimane.jp/www/contents/1001000000938/index_k.html
Papercrafts provided by Nankai
http://www.nankai.co.jp/traffic/paper_craft.html