For the original post by Ken Cohen, click on http://www.exxonmobilperspectives.com/2014/02/07/this-gasoline-tax-map-explains-a-lot/
The American Petroleum Institute just updated their map showing the combined local, state and federal tax rate in each state as of Jan. 1, when new taxes took effect.
The highest gasoline tax in the country is in California, where it now exceeds 70 cents a gallon. Combined with California-specific fuel-blending regulations that drive up refining costs, these taxes help make Golden State gasoline prices the most expensive in the country.
Several other states, such as New York, Connecticut, and Hawaii, are close to California in terms of the fuel-tax burden their residents bear, though none has yet joined in crossing the 70-cent-per-gallon threshold.
I encourage you to study API’s map (click the graphic above to enlarge), or dig into its interactive version for state-and-local-level specifics.