I've been working away on this by myself for about 18 months now. Built 3 prototypes in real life, getting the CAD models correct and getting ready to maybe do a kickstarter to fund the building of a few prototypes. This is a very efficient use of resources. Strong and lightweight. Mobile and modular. 200 2x4's and 4 sheets of plywood and a bucket of bolts and screws creates the modular, flat-packable frame.
Its all open source, (with strong reciprocity) build it, hack it, fork it now. Why don't we have an open modular standard for shelters like Saunas? (or greenhouses, or small offices, or...).
No mercy, no malice - let me know what you think