Strobing lighted object moving in front of us

I was the passenger. We were traveling down fm 1794 at about 55 mph. First time on road. Notice some stobing light in the distance. At first I thought it was a warning light to a sharp curve or something like that. All of the sudden it was directly in front of us about a guarter of a mile about 40 feet off the ground and was getting closer but never to close to feel threatened. Maybe 200 yards and traveled at the same rate of speed that we were moving for about 30 seconds. Then it moved away down the road ahead of us and faded away . The object was flat. Size was maybe 4ft wide and 8 ft tall. Similar to a lighted panel facing toward us with several lights flashing.