Step back to the day when a visit to the gas station meant service with a smile, a wash of the windshield, and the cheerful question, "Fill 'er up?" Since their unremarkable beginnings as cheap shacks and curbside pumps at the dawn of the automobile age, gas stations have taken many forms and worn many guises: castles, cottages and teepees, Art Deco and Streamline Moderne, clad with wood, stucco, or gleaming porcelain in seemingly infinite variety...