Three white round lights morphed into two, changed colors and then disappeared in the sky near Yuma, AZ.We were driving north to south on 95 perhaps 10-12 miles north of Yuma but just south of the Proving Ground. My wife was driving and this is what she saw: I saw three white rounds lights in synchronized formation traveling low about the same height maybe slightly higher as the phone lines along the highway. They were flying in swooping and rapid movements. I was trying to figure out what it was and finally woke my husband, and said, ‘Hey, I think it is a UFO.’ I then concentrated on driving while he watched. This is what he saw. I saw the same three lights and immediately they changed directions away from us, very low to the ground and the 3 morphed into 2 lights changing colors and disappeared out of sight. I am not sure, if it totally disappeared or if it was hidden by the small hillsides as we traveled away.