We have re-invented trains for the 500th time. Good job world.

What if you link a whole bunch of them together, and then instead of having each cart be self propelled, you could have one car that pushes all of the linked cars at once? Sounds way more efficient to me. If only there was a name for a long chain of linked cars…

This is how you get the US to finally agree on a large scale train system: can them trucks.