Huge long narrow aircraft with seven huge lights appeared 100 ft. above our car and followed us for approximately a half mile

We were driving from Durango, Colorado to Pagosa Springs, Colorado on an unlit, remote highway.  We were traveling about 55 MPH.  My nephew, an aeronautical engineer, was driving my car so I could watch for elk on the highway, being the spring of the year.  
All of a sudden the highway in front of us lit up for a distance of approximately a quarter to half a mile in front of us.  The light was a very soft misty light and for some reason it didn't alarm us, it just appeared.  
Being in the passanger seat, I bent up over the dashboard to see what was above us.  What I saw directly above our car was a huge soft, round light about 35-50 ft. in diameter.  As I looked closely, I could see greyish metal surrounding the light but could discern no definite shape.  
Then, looking directly ahead and just above the car, I counted seven of these round lights in a row down the highway.  
As I was peering directly up above the car, the ufo suddenly made an elegant curving motion just above our car and in a fraction of a second was gone.  As it made the turn, we could see the individual lights bending as the craft went skyward at thousands of miles per hour.  
The next moment I could see it far off in the sky with the lights in a row but the object now looked about two inches long and then it disappeared.  The craft made no noise.
I asked my nephew not to discuss what we saw until we arrived home and wrote everything down, including drawings.  The only discrepancy between us was I thought the craft was about 100 ft. above the car and he thought it was only about 75 ft. above.
The next morning, we went to the local Pagosa Springs airport and spoke with the airport manager.  He said his neighbor  had seen a similar huge craft hovering over his house that night.   After having time to consider everything, we realized the ufo had to be traveling the same speed as our car as we were driving as it didn't seem to be moving at all.  The one end of the craft was directly above the car.  
We reported it to the local Sheriff but he didn't seem interested and made no notes.