If the lever isn't pulled, the Busytown Trolley will shear off the legs of 5 adults. If redirected, it will bisect one teenager.
If hit by a strong breeze, it will fall over and the worm inside will flop out.
Lowly can stop anytime he wants. He chooses not to. You can throw a switch to attempt to redirect his unrelenting advance, but you only buy the chosen innocents the mercy of going first.