"I never wrote that exact ending of California Split. That ending happened by accident. In the final moments [after a winning streak in a Reno casino], Bill (George Segal) says to Charlie (Gould), “I gotta go home.” Charlie replies, “Yeah, where do you leave?” Bill stares at him, then says, “I gotta go home, Charlie.” He walks out and Charlie spins the wheel of fortune. Credits roll.
Now, that was not the original ending. When that happened, Elliott wasn’t supposed to say that line “Where do you live?”
…On a sidenote, Elliott is still mortified that his line changed the ending. He still tells me about it. He says, ‘I put doubt where there was never any doubt. When you wrote the script and the ending, there was never any doubt.’”
—Joseph Walls, screenwriter of Robert Altman’s California Split, in Stop Smiling.