Expensive diesel is a much bigger problem than expensive gasoline.
The world economy runs on diesel because diesel has more energy per gallon and powers trucks, marine vessels and heavy equipment.
Supplies of diesel were tight even before the war in Iran— and, writes Emmett Lindner for the New York Times— refineries in the Persian Gulf exported much more diesel and jet fuel than gasoline, while no other countries have the capacity to make up for that loss.
And here we are at $6.30 for gas and $7.70 for diesel.
(Gas is very expensive on the West Coast. The national average for the USA stands at $4.03 per gallon. Diesel $5.60).
Since the war began, diesel has gone up about 45% and regular gasoline by 35% percent.