Bright flashing object, bright lights following.I was driving along HWY-434, heading towards Wolf Creek, MT. All of a sudden there is a bright tan flashing light that happens over the passenger front side of my hood. Thinking that I was going to hit a deer, I slammed on my brakes briefly, but the flashing persists for longer than it should have, approx. 100 feet. I cannot make out what it is. As I continue driving, two very bright lights appear in my rearview mirror. The lights are an odd color, white/red/blue but never one color at a time. This section of road has hills and turns and the lights seem to be staying behind me. At first, I thought it was a combine (farming machine), and then I thought I was getting pulled over, but then realized that I never lost sight of the lights around the hills and turns. The lights stay the same distance from each other and stay in my mirror for about three minutes. I got scared, stopped looking and drove way too fast to notice if they were still behind me. I did not pass a single person on the road that night.