I meant to blog about this fab little pad ages ago. It was pinned to pinterest which led me to the tuovinen.net site which held the original 1971 brochure! Designed in Finland as an easily transportable modular building system, it unfortunately appears to have flopped. I'm not sure how this happened - it has a SAUNA, people!
There are also pictures of one which has survived til today (albeit used for a different purpose than it was originally intended).