He chuckled a little bit to himself and held up a hand. "Alright, alright." He would stop teasing her.

"It's definitely real, but I doubt it's powered by steam. We can't get into the engine car so I haven't had a chance to get a look, and it blocks us from ordering books about how it functions. Bit of a gatekeeper on some knowledge." Senku huffed lightly, that was what he thought about that.

"I'd be surprised if it did function on rails. We can't see because you can't really look out into the void and see much of anything but light or darkness and it gives you a nasty migraine the more you look."