Well I drove from Newnan,GA to Williams,AZ to drop off my wife at her Mom's. Then drove to SF to go to a Exhibition and then back, 5020 miles, 103.4 gals of Premium, $199.56 Total and 48.6mpg. average for the trip. Not to bad. I could have saved atleast $20 if I used Regular but didn't want to give up the better mpg's. Fortunately I almost didn't have any rain( it rained in central CA) and no snow, but the winds where brutal at times with 20-30mph head winds. I had one stretch from ABQ to Tucumcari, NM, about 150 miles I had about 20-30mph tail wind and was averaging almost 60mpg going 65-75mph. After that winds reversed and I was getting in the 30's OUCH! I still managed somehow to get 51mpg on that tank. If you are interested you can click on my Fuelly icon and see how I did.