I do not think it is that segmented.... since they are basically the same car anyway there would be no reason to split it up by day or week anyway. If I hear more on it, I will post an update.
Just a fun fact, but Ford and Mazda have a joint venture plant in Flint Rock Michigan, which builds the Mazda6 sedan and Ford Mustang. The two cars couldn't be more different. No common architecture, parts, drivetrain locations, etc. The plant can convert from producing one vehicle to the other in 15 minutes.

It is one heck of a turnaround, and one heck of a flexable plant! (although very different than Wilmington... just thought I'd throw this out as a fun bit of info).