I would be more inclined to imagine a GM/Toyota merger. Aside from Jeep, there's nothing GM needs or wants from FCA.
FCA will be a buyout by someone like Hyundai or Geely in order to get Jeep, Ram, and possibly Dodge as a niche muscle brand. The rest of course is total trash worthy of being burned in fire.
I can't think of many current cars that are not worthy of being burned in fire.