No-one mentioned Bob & Ron Copper's last verse 1940s/50s addition to their family's The Seasons Round: Now things they do alter as time do go along. I'm afraid I shall have occasion to alter my song. You'll see a boy on a tractor a-going like hell, And whatever farming is coming to there's no tongue can tell!

I agree with the poster who just murmured "John Henry" somewhere up there.