Lucy

Despite widely published reports that Angelina Jolie was originally cast as the lead, but dropped out, Luc Besson has since denied them and admitted that he only met with a couple of actresses to discuss playing the lead role. He says when he saw how strongly Scarlett Johansson reacted to the story, she immediately landed the part.

When Lucy uses the visual analogy of a car traveling faster and faster until it disappears from sight to explain that "Time" is the most important thing, this is incorrect and misleading. If an object were to travel so fast that it appears invisible, as depicted in the video, it wouldn't actually disappear. In fact, it would essentially create a wall along its path. This effect is analogous to the nature of atoms in which subatomic particles revolve around the nucleus of the atom at such great speed that it keeps the atom together which results in the formation of matter according to particle physics. Therefore, the car would not disappear as suggested in the video segment, but rather transform into an impenetrable wall of energy encircling the Earth along its path, as it approached infinite velocity.

Featured in The Tonight Show Starring Jimmy Fallon: Morgan Freeman/Kesha/Tweedy (2014)