If you are taking I-40 thru AZ and CA, DO NOT get yourself in a position to have to buy gas in Needles. One of the highest prices in CA. Twenty miles east on I-40, just inside AZ, exit 9 is a Pilot/FJ, Loves, and a Terrible Hearbst(Chevron, I believe) that has fuel in the range of $1 less per gal.
Barry & Sue Miller(extended RVer's, 6 mos + per/year)
04 Journey 39K, C-7, 330 hp, towing: 02 Dakota 4X or 2013 Ford Edge, Aero 5050XL