I wouldn't be surprised to find out that gas retailers in California would continue to price their gas at ~$5.00 a gallon when they don't actually have any to sell (or conversely, aren't selling any at all) because of how inelastic and regulated the supply is.
Everyone in CA that I know is ready to be done with gas. Regrettably, Californians also pay some of the highest costs for electricity (more expensive than HI[1]) so we're out of the frying pan and into the fire. Nothing more American than regulatory capture (looking at you SDG&E and CPCU)
[1] https://www.cbs8.com/article/money/amped/san-diego-has-the-h...
edit: source for $1 gallon https://abc7news.com/gas-prices-lowest-in-a-decade-13-states...
If you ever needed evidence that you live inside your own little comfortable echo chamber...
Also, I'm a little confused: SD and LA are in California, of course.
Also, CA has its own refineries that have additional blend restrictions (if I am not wrong). You cannot legally sell, gasoline that is refined in LA or TX and sell them in CA gas stations.
They require a special formula for which there aren't many refineries https://ww2.arb.ca.gov/resources/fact-sheets/gasoline-freque...
Russia refused to restrict their supply in defiance of OPEC so the Saudis flooded the market with a bunch of super super cheap oil to undercut Russia. That's what led to the negative prices another commenter mentioned.
The problem was is that most of the US oil production is shale oil production. Shale oil is more expensive to produce than raw crude, which is why it didn't really take off in the US until gas was moving towards the $4.00 mark in the mid oughts. The problem that caused now is that the cheap oil all over the market, combined with the decrease in demand priced out shale oil producers who shuttered and now that demand is returning the companies helping supply don't exist anymore.
As for why it didn't drop lower I was seeing low $2.00 and under in places.
In the US, gasoline prices still dropped about 30% off their most recent pre-covid prices.
There are also fixed costs involved with transporting gasoline, running a gas station, gas tax, etc that will not change much with supply & demand.
Given all of this, gas prices seem to mostly correspond to what was happening: production plummeted, demand plummeted with some modest shifts, and so prices at the pump dropped by a relatively modest 30%.
https://gaspricesexplained.com/#/?section=whatconsumers-are-...
Refiners can also switch to diesel and/or heating oil which appears to be in just as high as demand as before Covid.
Wikimedia has an awesome chart with 2022 data for each US state's tax burden on gas prices for example: https://upload.wikimedia.org/wikipedia/commons/e/e9/Gasoline...
My country had a massive glut of milk overproduction this year. Well beyond what the country could drink, use in other products, or even export.
Know what happened? Some companies reduced milk container sizes from 1000mL to 900mL and prices went up.
So I guess, in a sense, what you're asking about did happen?
[0] https://www.marketwatch.com/story/oil-prices-went-negative-a...