driving to work spotted bright light in the sky...I was driving to work in the morning. I was between Busby and Crow Agency, Montana. In the sky I saw a round light. It appeared to be moving up very fast or the clouds were moving down very fast. I was watching it as I drove west. Suddenly it was gone. I did not see it shoot across the sky or anything like that. It was just gone.This actually happened to me once this summer but it was at a closer range. on the same road.I was so dumbfounded by this I did not know what to think. I did not tell husband about it until it happened again.It was the same shape both times, a round light in the sky...and then it just disappears.