Thanks for the responses,

By the way in real life it looks like what a twin Otter would have
looked like if it where designed the same day as the single engine
version.

For it to be worthwhile I want to replace some restaurant meals plus
all hotel and auto rental costs while on the road. That means a full
kitchen and washroom facilities, tables and adjustable seating, TV and
comfortable sleeping facilities for two.

Assuming at any airport:-
- Clean water is available.
- We could drain the grey water.
- Black water removal may not be available.
- Electricity may not be available.
- Winter operations.

So far I've found:-
- vacuum toilet that uses about half a quart per flush.
- very low volume shower heads.
- motor scooter and sidecar around 400 lbs.

Starting to play with:-
- how not to die of carbon monoxide poisoning, explosions or fire
- how to keep the pipes from freezing when we are not around
- how to empty the black water
- how to go as light in weight as possible
- how to get a quiet electrical generator that runs on avgas

Then after all is said and done. How do I get all this approved? I
mean by the authorities ~ my wife is another story.

Bill