Thanks all!
The streak, was most likely a meteorite. Probably with mostly ice. A low whoosh, and I swear, you could smell it. I was in the middle of a long exposure and as soon as it closed up I spun it around and started grabbing shots. I've only seen one other falling star leave a vapor trail like this a few years ago- most cool. I have had suspicions on a few jet contrails, but usually ignore them after a bit. Meteors/falling stars are quite common here, but becoming less frequent as more "humanage," mindlessly builds disposable homes in this once sparsely populated/rural area. However, out in the middle of the desert, they can be seen quite often and easily. Usually they just streak light across the sky and rarely leave a vapor trail. I think it's in August of every year, the earth passes through an asteroid belt. The show can be quite amazing. Next year, when I have a remote, I know of a nice wide open spot in the dark I'm going to go sit for a few nights.
Another note about meteorites; Usually when a remnant is found, it is on a dry lake. Not because they are attracted to them, but playas (dry lakes) are free of most vegetation and the rock can be more easily discovered.
I love the desert at night, and have done both moonlight and starlight hikes. You have to be a little careful, but the eyes adjust after about 45 minutes and I think it's to about 60-70% of what can be seen in the daylight. I carry a flashlight, but have yet to use it night-hiking.
