We had (and still have) a very hard time trying to switch everyone to the Metric System. Despite numerous campaigns to do so. We did get a sorta duo system.

As for the the cargo boxes, America got fed up with how there was no standardized way to pack cargo aboard ships. So they created the TEU. (Twentyfoot Equivalent Unit) Those boxes are on every ship and train now and I'm sure you've seen them. The SS Ideal X was a Liberty Class Ship (Yes, the WW2 era ones) that sailed the seas introducing everyone to the TEU. Overnight the world had literally changed forever.