Despite what many UFOligists would like to believe, this video is not proof of alien activity in Mexico...unless Goodyear has been exporting off-planet. A trick of the camera angle and atmospheric conditions has given this common blimp the appearance of something that it is not.
As with the majority of UFO sightings, this is simply a case of mistaken identity. However, this is not to say that none of the Mexico City sightings are real. As data continues to pour out of Mexico, you can be sure that we'll be there. After all - the Truth is out there!