I found this site with tons of videos featuring japanese folders, especially minifolders with wheels < 16".
http://www.yo.rim.or.jp/%7Etomooki/bike_movies.html

They also have a bunch of touring logs on the Handybike, the Strida, the Airnimal, the Frog and more:
http://www.yo.rim.or.jp/%7Etomooki/tartar.html