Removed from Grand prix

The only explanation that I was able to find is below, though it’s not real helpful. If had to speculate, I would guess that since James Garner and Eva Marie Saint had worked together previously, he might have felt that he had a better rapport/chemistry with the latter.

Swedish actress Harriet Andersson was cast as the female lead and filmed some scenes. James Garner wanted to replace her so Eva Marie Saint got the part instead. No explanation was given.