This is an issue that pops up enough I should consider a FAQ. The issue is that the rail lines are all supposed to be powered from municipal reactors that produce gigantic amounts of power, all of which are radioactive ash sprinkled across the planet at this point. There was a certain minimum amount of power you had to push into the system to get it to go when things were running properly, and now the system is full of holes and leaks. For the foreseeable future the existing lines simply will not work. You could work out fresh ones if you invested in plasma and field physics and in materials science.
As for diesel (or any other petrochem system), that is doable, but it would require you to devote at least one refinery just to producing the fuel and the research and infrastructure investment time is probably greater than just building with fusion reactors.
Erm, why do we need the land train in the first place? I thought that the civilians recently modified the existing trucks using compact fusion reactors, so range shouldn't be an issue, and volume of cargo should only be a matter of using more vehicles.
I can see where the land train might have some advantages - cheaper, since only one motor/reactor would be necessary, and also requiring a smaller crew since only 1 vehicle needs to be steered - but I'm not sure I understand why we can't reach the other two FV settlements - ie, Librarian's Nook and Six Pillars - quickly enough?
Alternatively, couldn't we just establish a reaction-force in Amethyst Garden, with vehicles, soldiers, and whatnot, which can then quickly move to either settlement from there?
Also, we have absorbed Amethyst Garden (which still needs a segment on the frontpage, btw), but what about the settlement where the Recyclers originally lived? Hearthhome, I think? Did we take that over as well, or is it too distant, going by the same limitation why the other two settlements aren't joining us, yet?
As for what to do here:
[x] Spot the Machine Heads the entire 8500C (0.5+d.10x)
I'm not entirely happy about it, but I guess it's good enough.