Parallelogram shaped bright, white light low on the horizon, flashed twice.We were visiting Taos on vacation and were driving on Rt. 68 Northeast on our way into town. It was just after dusk when we saw a rectangular or parallelogram shaped white light low on the horizon. The very bright light flashed for 5 seconds, as it moved horizontally across the sky. The light went out for 2 seconds and then flashed again for 3 more seconds and then was gone.