The final prototype. Thanks Jukka Jokinen for the picture.
Filmed by Jukka Jokinen
First sketches of the idea
First physical mockup proved that the folding mechanism works. It also demonstrated a faulty steering geometry that was later corrected
Mockup in the folded state
Functional prototype. This was created quickly and crudely, but it worked quite nicely anyways. Riding it for the first time was very rewarding.