It is. There's some work to be done yet - I'm betting you can help with that - but a lot's been done already.

[She glances briefly out the side of the coach, before shaking her head softly.]

I can't imagine how hard it is to grow flowers traveling through the void. No sun, you have to pipe in water from... I assume the train's supply? Your grandmother would have a field day trying to make anything thrive in here.