It was silent and metalic and reflective.Me and my brother were walking down a hill on a small peninsula of a lake outside Mexico City when e both noticed a metalic elongated egg or cigar that was hovering along side of us. It appeared to do off in the distance 100yds or so depending on its size. It looked like it was matching our speed until we stopped and it continued slowly moving along. It dissappeared behind a tree and when we tried to see where it went it had gone without a trace. I am convinced I saw a UFO. I however, believe that UFO means Unidentified Flying Aircraft and not little green men in a spaceship.((NUFORC Note: Date is approximate. PD))