"It drives itself. I... think most just assumed there was a conductor, at first."

Nita nods.

"It's not a typical kind of life, but as a wizard I can still sense it. There's a presence, and it doesn't want us to go through the wall. It doesn't hate us, or anything, just holding itself apart. Distant."

Whether the wall was a symptom of that or an actual design feature of the Voidtrecker Express, Nita did not know for sure.