I don't think I've seen a thread for old gas stations, so it's probably high-time to add one. I've taken a number of photos of cool old gas stations lately, which I now share with you:
The old Sonic gas station on North Main:
Sonic disarray by dangr.dave, on Flickr
Santos - in Oak Cliff:
Santos by dangr.dave, on Flickr
Abandoned - in White Settlement:
Like the service that they used to have by dangr.dave, on Flickr
Paso del Norte - on Azle Avenue:
Paso del Norte by dangr.dave, on Flickr
Magnolia Petroleum in downtown Dallas:
Bright lights, foggy streets by dangr.dave, on Flickr
Sinclair - on McCart
Go with the dino by dangr.dave, on Flickr
If you have others, feel free to post 'em!