I noticed a balloon like cluster floating in the sky, so figured some one released black balloons tied together filled with helium. But noticed a flash blinking below. So I stopped my car and was amazed at what I was looking at, cross shaped, moving ufo. At times it would take a pyramid shape. And as it was at its lowest point, it would fly lop sideded. Then slowly rose up and became less viable and vanished. This accurred near freeway, and was also witnessed by a friend.