According to this post on Exxon Mobil's Perspective Blog , "For every gallon of gasoline, diesel or finished products we manufactured and sold in the United States in the last three months of 2010, we earned a little more than 2 cents per gallon. That’s not a typo. Two cents."
Perhaps this explains why we never hear State governments complain about high gasoline prices.
Go read the rest of Mark Perry's post and see the map of the states with the highest and lowest gas taxes.