A bright light appeared and shot towards the horizon at an incredible speed but went out before reaching the horizon.Yesterday, on October 6, 2012 at about 9:30 p.m. MST, I was driving on I-215 northbound on the west loop. While driving, I saw a bright white light appear in the sky that I thought was a plane or something. However, the light was bigger than the other planes in the area. Then, the light shot down towards the horizon at an incredible speed but before the light reached the horizon, the light went out. The whole experience was about 10 seconds or less. Maybe, it was a shooting star.