California adds 12 cent gas tax and 20 cent diesel tax

The big concern is like other earmarked taxes the increase will be siphoned off to other expenses. The state legislature seems to have a pretty loose definition of 'transportation related' expenses. For example, a portion of the vehicle registration fees goes to the state TANF welfare program.

We do most of our shopping in Reno now, and always fill the tank in Nevada before returning home.