The casual listener may have noticed a lyrical leitmotif running through this Texas song sampler, to wit, the seductive lure of the open road. Most of the state's population lives in the gridlocked precincts of Dallas/Fort Worth, Houston, San Antonio, El Paso, Laredo and Corpus Christi, but if there is one abiding fantasy we all share here in the land of Big Oil and bigger pickup trucks, it's an empty highway stretching to a ruler-straight horizon, a sweetheart by one's side, a good song on the radio and "no particular place to go." Shelley King, a honey-voiced honky-tonk thrush was transplanted to Austin from Arkansas by way of Houston.  In "Texas Blue Moon," she distills the whole highway fantasy into one midnight run so sweet it makes the destination irrelevant.