And stop to feed itself at Tanks — (3)
This is an intriguing image of the train being refueled. Interestingly, the speaker doesn't describe the train being fed by human hands, but instead gives this amazing technology a kind of autonomy or agency.
And supercilious peer In Shanties — by the sides of Roads — (6-7)
Oh dear. Feeling high and mighty, are we? The train's inner life is filled out more here; it seems to feel a kind of superiority to the inhabitants of the shanties (humans). What might this imply about the relationship of technology to its inventors?
And then a Quarry pareTo fit its Ribs And crawl between (8-10)
Here, we see that technology is able to surmount even the greatest natural boundaries – it carves paths where none existed before.