It's already there and above in the SF Bay area

Refinery problems send California gas prices skyrocketing

The problem is the boutique fuel required in California. In times of supply stress as now because of the huge refinery fire at the Chevron plant a few weeks ago and maintenance needs at other plants there is no supply. Neither the Federal EPA or the fascist California Air Resources Board have the mental acuity to permit exemptions that would permit other gasoline to come into the state. Californians are hostages of the extreme environmentalists.