Triangle over Rabbit Ears Pass/Steamboat springs, CO

The report, as filed

My mother ((age deleted)), two daughters ((ages deleted--teens)), and myself ((age deleted--forties)) were heading up to Clark, Colorado, for a brief trip, before the start to school. We were heading towards Steamboat, going over Rabbit Ear's pass. Upon summit of the pass, we saw a triangle like craft traveling East to West. The craft crossed the road in front of us, about twenty feet above tree line. The craft was a very dark matte grey, with wings that flipped up at the tip. While most of the craft was very thin, there was a dome in the middle. The craft was traveling very very fast, and tipped up on its side after passing in front of us, almost as if it was going to clear the tree's ahead. My mother and I being in the front of the car got the best view. There we also 2 other cars ahead of us. No one stopped, but we quickly realized what we had seen. Also, the craft was silent. It was so light out, and the craft was close. I called the Steamboat Springs airport, and spoke with a nice gentleman that could in no way verify any aircraft or military craft of that nature in the vicinity. We spoke with the witness, and found her to be exceptionally eloquent, and she seemed to us to be quite sincere. We suspect that she is a very good witness. PD

Held as-reported from National UFO Reporting Center (record NUFORC #135688). Witness text is preserved verbatim, including its spelling; nothing is edited beyond formatting.