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I saw this Steve Goodman clip before I ever knew Arlo Guthrie had recordd it.

How many get this bit wrong?

And the sons of poor men porters and the sons of engineers
Ride their father's magic carpet made of steel
Mothers with their babes asleep rockin' to that gentle beat
And the rhythm of the rails is all they feel

And the sons of Pullman porters and the sons of engineers
Ride their daddy's magic carpet made of steam
And mothers with their babes asleep, go rockin' to the gentle beat
And the rhythm of the rails is all they dream