It was about 830 pm, my friend colin, his girlfriend marnie, and i(julian) were driving down i-25 south of fillmore. i was the 1st to notice this light in the sky it was larger than any airliner or object i have ever seen. i saw i and immediatly pointed it out to colin and marnie. I was facing south towards Cheyenne mountain. I saw the lights, there were three lights about a thousand feet(it seemed it was halfway up cheyenne mountain), all in a line the light simaltamiusly shut off. This happened two more times, with the last sighting seeming that the object was moving, the lights appeared in a trangular shape almost seeming like they were separated or it was turning. We even drove all the way to the base of the mountain, the frontage road to N.O.R.A.D. I have never seen anything like it before, and i noticed there was no air traffic in the air at the time, as soon as this object dissappeared i noticed air traffic resumed.