The sinking of Robert Zemeckis's Mars Needs Moms has apparently sunk plans for another Zemickis motion-capture feature, the Beatles' Yellow Submarine. According to the Hollywood Reporter, the project has been canceled by Disney after the Mars flick, which reportedly cost $150 million to make, ended up earning just $6.9 million on its opening weekend -- thereby becoming one of the costliest flops in all of Hollywood's history. Despite persistent rumors that the production was in trouble, Zemickis has insisted that it was moving forward. Six months ago it was reported that the film would star Cary Elwes as George Harrison, Peter Serafinowicz as Paul McCartney, Dean Lennox Kelly as John Lennon and Adam Campbell as Ringo Starr. Elwes told MTV News that he expected that filming would begin in April.