Realist,
In the US, people think a "rational" decision is to buy a gas-hungry pickup truck (Ford, Chevy, Dodge).
In Germany commuters like the Golf because it serves the purpose and the high fuel prices would make a truck a bad choice.
The USA is living with cheaper gasoline than diesel is part of this.
Also, German prices of fuel: Gasoline 1.562 Euro per litre and Diesel 1.347 Euro per litre
If we had lower diesel prices in the USA, I think small diesel would work. In my area, gasoline is 3.51 USD per gallon and 3.95 Diesel.
I think we are strapped in the USA. If those in charge went and added the type of taxes that exist in Europe, the economy would take a big hit. I also think our "cheap" gasoline is what will keep the EV adoption here slower than we will see in Europe and Asia. Tesla is on the verge of exporting more units produced than kept in-country. Q4 almost looks like a sales ratio of 1 to 1 exported:kept.