Gas Across America

I have just returned after a trek across the American West.  Interestingly, as you push east from Idaho, gas keeps getting more and more expensive.  I had thought I'd read somewhere that prices were going down, reaching a national average of $2.75.  I now cannot find that article, alas.  But this American News piece indicates that gas is over $3.00 in Aberdeen.  In Idaho we got gas for as cheap at $2.63.