"Bo" is the swedish word for "to live", living at home is "bo hemma" in swedish. As the Saabo had Saab 95 underpinnings the name explaines itself. "Biltjänst" means "car service" and "Husbilen" means "house car" or "mobile home". The Saabo had some grill parts from Volvo 121 (it was called Volvo Amazon in the swedish market) and from Saab (center part). Interesting story, I have have never heard of this one.
(Translation from swedish? Yes, I can speak/read/write swedish, danish, norwegian and english.)