This web site, titled "Palm-sized Paper Models Gallery" is apparently run by a Japanese gentleman named Akira O, and contains photographs of many vehicle models designed by him. It has been in existence for some years, but was redesigned in 2017 and now contains several pdf files of model parts as well as the photographs of the completed models. Among the dozen or so models listed in November 2017, six are motorcycles, and three have kits available - two small Hondas and a Harley-Davidson Hummer.
In December 2017 four new models appeared, including two more Honda motorcycles. However, the motorcycle kits were quickly withdrawn - first the new ones, and then all the Hondas. Late in 2018 the car models were also withdrawn without comment.
More recently (2020 or so) some models have been made available to buy, and there are also a few for free download, but none of those shown here.