Did not California just add a big tax to a gallon of gasoline?
Yes they did.
Per API, updated as of last quarter...
California (Link) Close
Gasoline
State Excise Tax 41.70 ¢ per gallon
Other State Taxes/Fees 13.03 ¢ per gallon
Total State Taxes/Fees 54.73 ¢ per gallon
Total State plus Federal Excise Taxes 73.13 ¢ per gallon (@ 18.40 ¢ per gallon)