"Comet Like" Blue/Green streak before dusk.......My six year old and I were driving on N FM 620 going South at around 5:45pm when a bluish/green "comet"like thing came out of no-where...it was very fast traveling east to west, lasted about 3 seconds and then disappeared. It went right over me across the highway, and it seemed to be very low....it was right before dusk, and the sky was completely clear....there were plenty of cars around me that should have seen it also, so it should be interesting if anyone else reports it. Whatever it was, it was beautiful, and left my heart completely pounding!!!