Object over Lake Tahoe.Before dawn on Friday September 12th, I noticed a small red dot in the sky over Lake Tahoe. I was a passenger in a work truck. I commented to my friend and asked if he could see it. The red seemed to change slightly and then it turned white and changed shape into more of a comet with a short tail, all bright white. At this point my friend saw it too. The object seemed to grow much larger then and resembled a bright spot light shining into a smoke like vapor, like a v shape trailing behind the light. The light seemed to steer towards the south and west from my position on the north shore. The vapor seemed to expand and lighten and the light then vanished completely. Not sure what it was but I will be looking up more from now on!