The idea is to develop an open source build your own bike kit. It is made of standard aluminium tubes and custom attachments you can assemble the way you like. It comes with two predefined frame geometries you can switch from, city and cargo, but the idea is that you can develop any standard or exotic bicycle frame out of it!

See the project page on Github.

Last prototype from Jamie Taylor @ University of Bath: the Adjustabike
First protoype developed @ TU Berlin