Straight linear formation of about 100 solid lights that went out one by one

Driving into Whitewater from the north on Highway 59. Passenger spotted a straight linear formation of bright solid lights out the window towards the city and rolled down the window to attempt a photo. I only saw about 20 because I was driving, however he claims to have witnessed close to 100. Turning off the road we witnessed the lights go out one by one. The total event took place over the course of about minute and we did not see them again.