Michael J. Fox and Christopher Lloyd have reunited, 30 years after the original Back to the Future was released. The two are at a diner, waxing poetic about what types of things came true from the sequel, Back to the Future Part II. It's a genius ad campaign from Toyota, who released this short teaser of a longer film that will be released on Oct. 21. Movie buffs will recognize that as the exact date that Marty travels to in the second movie. Brilliant, right? Check out the teaser now, and stay tuned for the whole video next week!