I discovered their website a while back - it is a fascinating concept. I particuarly liked the powercube -
The Power Cube is a modular, universal, self-contained power unit consisting of an engine coupled to a hydraulic pump, providing power from hydraulic fluid at high pressure through quick connect hoses. It is designed to function as a modular and interchangeable power supply for GVCS technologies.
http://opensourceecology.org/wiki/Power_Cube
The modular capability of it seemed great to me. Being able to chain it only another of the cubes for added power, and also it being a completely transferable power supply, oh man.
Now my next challenge is to find someone in QLD/NSW, Australia who is interesting in putting some of the theory into practice with me! A man with no land and little money, but heaps of enthusiasm, has limited options when it comes to fabricating equipment.