I came across this the other day whilst still pondering the Church Pod body on ebay mentioned in a post here. This seems like it could be easily adapted to a home build with no compound curves and a doddle to get in and out. I may even have a go at making something along these lines as my next project. Practicality would have to be the prime feature for such a project. Ease of getting in and out, weather protection and keeping the weight down.