My dog in Bodenständig 2000 MechBern has built the first really working scooter for everyday life called Plankalkül. Version 3 is still top secret, but I managed to leak some pictures from the secret laboratories!

Finally a lo-tech alternative to the 32MB videoclip!
MechBern with Plankalkül V3
MechBern thinks about Plankalkül all day long.