buildables on trains?

[N.U.K.E.]

I haven't started making one yet, first thinking up a few concepts. So, I'm wondering if I could have one space ship crash into another, and take the time before it crashes to give both teams an opportunity to build, and have them stay in the ship on the location where the builder wanted them? (because from gameplay experiences, you couldn't build on moving objects)

[Taiyo.uk]

Structures cannot be built on moving objects. You could simulate the ships colliding by using ye olde illusion techniques (false views through windows, etc.) but you won't be able to build on trains without modifying the engine.