Nah nah nah.
Your average yankeemobile is all body and no guts. Just look at those tiny little wheels. They're there because they can't carry much weight.
Engines are tiny too. The few specials that you see in pics aren't indicative of the average wagon that potters up and down the Interstate.
This is a Kenworth just outside of Tallahasee. Her Ladyship is at the wheel. Now this baby was l-o-n-g!
Now take a peek at the tiny engine and tiny wheels. Yup, all row and no go!
Now this is a lively baby. Curtain sided too for easier loading/unloading.
Englishman.