Wow that is amazing, inspiring and really interesting. Thanks for posting.
As someone who loves looking at architecture and design (not with any knowledge mind you) and my favourite TV program is Grand Designs, the idea of creating something that is practical and more importantly totally sustainable is fascinating.
I have mentioned before that I am having a place built at the moment (and taking a lot longer than the initial finishing dates). It is two bedrooms and will be just the right size for myself. The slab has been laid and it does look really tiny. But if I could build anything myself, this might be the sort of thing I would look at. I couldn't have something as small as the one in the video, and I would need a bathroom, but it wouldn't be very far off.
Also in Australia we really do have a housing crisis with many properties now unaffordable and people do get caught up in the rental spiral. And so many places that you see on display are enormous with lots of wasted space. Maybe something like this might be the answer or what people should be thinking about.
And the fact that I am currently putting a lot of stuff in storage as I have to move again (and will be living at mums and housesitting until mine is built), these things certainly get me considering about how I could downsize my life.