Well, for one thing, I'm good at heavy lifting, and half of these robots are built like toothpicks.

[ ARM FLEX! But nah, she's kidding, she does have an actual answer! ]

For real though, the sooner they finish the tracks, the sooner we know what's up with the tracks, right? Like, have they just been stashing a whole train in a warehouse somewhere? Where are they trying to go? Mind you, I asked them this stuff and they couldn't answer me, I think giving helpful answers is against their programming.