Plotbunny for sale - cheap

[Sirrocco]

Bob: interesting. I suppose it's well within the bounds for someone to have come up with a sort of superplant that generated its own geodisics, once planted along the ground edge. It's the sort of thing you'ld want to have first and then think "Oh, neat! That means we can do Foo!" rather than try to focus-research for, but it's certainly plausible. You could even have it set up to turn into a nice ship-sealed hull when evenly watered with sufficient quantities of liquid handwavium - and the ground below could be covered by a similar effect with the root system. That explanation won't work well if you want to be the One And Only, but it works just fine for "and person X expressed interest, so I gave them a few cuttings."
Mind you, it'd be tougher for others to follow after once the 'Danes know what to look for - especially the really *big* domes. Fen heading into space with their cars is *mostly* acceptable to the local government types. They get away and under treaty protection, another one of the disruptive elements is out of the picture, and no one really gets blamed. Fen heading into space with large chunks of real estate is not so much. That's tax dollars, right there.
If you're really attached to the idea of a traditional spindizzy drive, *I'm* not going to stop you, but I'd *ask* that you not. We've pretty much avoided persistent force shields thus far, especially at the "preserves atmosphere" level, and I'd personally prefer to keep it that way.