The film, to be written and directed by David Croneneberg, follows a young billionaire's limousine trip across town, as he spends the day stuck in his car thanks to a confluence of protesters, a funeral and the president of the United States.
Throughout the course of his journey he monitors the health of his financial empire, is examined by a physician, lunches with his wife and has a couple of trysts.
In addition to "Cosmopolis," Farrell has also signed on to play the lead vampire in the remake of "Fright Night" (which is attracting a surprising level of talent considering what a throwaway goof the original was), and in "Horrible Bosses," starring Jennifer Ansiton, he'll play one of three friends who conspire to kil their employers.
Colin Farrell Catches a Mermaid in "Ondine"
Shooting on "Cosmopolis won't begin until after Cronenebrg has finished with his Freud-Jung film, "A Dangerous Method," starring Viggo Mortensen and Michael Fassbender as the founders of modern psychobabble.
Farrell's can next be seen in "Ondine," out June 4, a film written and directed by Neil Jordan about an Irish fisherman who finds a mermaid in his net, while Cotillard is in "Inception," starring Leonardo DiCaprio.