Three little train cars 'round the track
Circle once and circle back
The route is short, the cargo light
Their engineer within their sight
But little train cars quickly grow
"This little track is way too slow!
We want to cross the distant plains!
We want to be like grown-up trains!"
And so the engineer agreed
to let them test their skill and speed
He gave the cars a short salute
"Yes, you may take the big-train route!"
(I know. Whew. Sometimes the rhymes work with you, sometimes they fight you. This one is putting up a very good fight.)