Regarding the rising costs of fuel this year.. does anyone know what the average price of gasoline is in California and Arizona? I'm planning a trip from San Antonio to San Francisco next month and trying to estimate my fuel costs. Just need cost of regular unleaded in these states so I can get a roundabout estimate. Also, has anyone traveled I-40? Anything interesting along that highway besides Grand Canyon and Meteor Crater and Petrified Forest?? Thanks a million!!