As Michael sang Poison Train, the rhyme was implied, not stated, in the rather different last verse. A bit more genius:

I         vi
"Well, it never lasted long
         IV
Half the town was packed and gone
    II
And everybody was afraid
   V
To be left there alone

All the people stayed away
      IV
There was no celebration
      vi
And nobody made a speech the day that
IV                   I
They closed down the railway"

          V
There's a light... etc...