Never mind about the sketchiness of this post.

Forget the "science", forget whichever 'logical argument' you believe.

ICE Gas costs what all the governments you live under say it does. Pretending there are "capitalistic principles" involved is futile.

Broadly, every form of energy costs what the government says it does. What else explains the huge variation among countries? They all buy oil and refined products from the same suppliers, and everybody uses the "Petrodollar" to buy it. Example: S.Koreans have been paying around $6 per gallon, year-in, year-out for the last 30 years though their country buys oil from the same suppliers we do in the us.

IMHO the reason 'gasoline' is cheaper than diesel in the US is because more proles buy it. Therefore more people (votes) are hoodwinked by "gasoline-price stability" than the number who can actually make the connection with...
"the cost of diesel -> price of everything brought on a truck."

Here's another little-discussed shenanigan: The price-ratio in the US between diesel and gasoline is totally artificial. Diesel is literally nearer to "the bottom of the barrel" in the refining process as shown here.

In much of the rest of the world diesel is cheaper than gasoline at the pump.

As for electric cars (powered by coal, natgas, child-labor mining); once they're widely adopted, they'll be taxed by the mile, because they tear up roads just like ICE cars.