traveling by auto,11000ft. in Andes Mts, slowly, large "silver" mass not far above road level flew across in front of us. We stoped and looked around but could see nothing in the air or down the Mts.I and my friend saw the object, I hold a BA and MA in History, amd had been a teacher for 38 yrs. the other person is a Medical Doctor , surgion for many years. I an Ameircan living in Florida and he ,Ecuadorian . We were traveling form Cuenca ,Ecuador , down out of the Andes Mts. to the coastal city of Guayaquill in the middle of the night. The doctors teenage son was sleeping in the back seat atthe time and we trid to awaiken him when we witnessed the even, but befroe we could get his attention the object had vanished, so as I recall the duration of our witnessing it was brief . My friend and I sat there for a few minutes rather shocked or in disbelief for a while and continued our trip. I didnot mention to him that I had seen simular things in the Rocky Mts. of the USA some years before.