The original Airstream Basecamp was launched in 2007, then discontinued. IIRC, the design came from a partnership with Nissan, and of course designed to be easy SUV towable. I saved pictures of the Basecamp, knowing I couldn't afford one, but ended up here, and used the their features as my options list, and in a very rough and basic way, sketched my modular build around that. Couldn't duplicate the window of course, that would be cool for sure.
With just the two of us mostly now, If I could easily duplicate the Basecamp layout in a CTC, I'd probably do it, (but a little bigger...)
20007 Airstream Basecamp
http://www.colonialairstream.com/preowned-rvs/9722/index.html