Last Monday night, I was driving to Laredo from Houston, Texas. At about 10:30 pm, I pulled over about halfway between the South Texas towns of "George West" and "Freer." Where I stopped was in the middle of miles and miles of gently rolling ranch land covered with scrub brush and cacti. After zipping up, I looked at the clear night sky and it was dark enough and clear enough to make out the path of the Milky Way. Anyway, as I was looking up and facing south-southwest, I saw a falling star that flashed fairly bright. I spotted it about 40 degrees up and the apparent length of its descending path was maybe a bit longer than the distance between the tip of my thumb and the tip of my index finger extended fully away from my face. This, in itself, is hardly worth mentioning (several years ago I saw hundreds of shooting stars during a Leonids event). The unusual thing about this one was that it finished bright green...like a traffic light. There were no habitations in the area, no sign of camps, no sounds, no lights of cars, no aircraft...as far as I could teel, nothing but empty sky and uninhabited land for miles, perhaps. I thought that maybe it was a piece of satellite debris with maybe some copper content. Any suggestions?