See Pixar's Deleted Scene Explaining The Origins of TOMORROWLAND
If you saw Tomorrowland this past weekend, you'll probably remember some discussion about a group called Plus Ultra, which consisted of Thomas Edison, Jules Verne, Nikola Tesla, and Gustave Eiffel. In the film's alternate history, these creative giants put their heads together and became the founders of Tomorrowland, a utopian land in which scientists were free to experiment without boundaries in an effort to innovate and inspire.
Director Brad Bird, who won two Oscars for Best Animated Film while working at Pixar, reteamed with the company on Tomorrowland, originally envisioning an animated sequence that would provide some backstory about the creation of Plus Ultra at the beginning of the film when Frank goes under the It's A Small World ride. The scene, which contains voice work by Maurice LaMarche, was cut from the final release, but now it's available to watch online, so you can check it out below: