I found a full service gas station! Growing up in Arizona, I know this is not a common thing to find here. I only needed a few gallons to keep me from empty, but the attendants were still willing to offer me their best service. They pumped my gas for me, and washed the windows, and rang up my card, all while I sat in my vehicle.
Be prepared to pay a little extra per gallon of gas, but it is well worth it for the convienence. I bet during the 110+ degree Arizona summers they are quite busy helping people stay in their vehicles.
Located next to the AJ's Fine Foods at the corner of Lincoln and Scottsdale (look for the Sinclair's logo sign). I saw signs that they provide other services besides gas, but I can only speak for my experience.