My random thought of the day:

I would like to see Buick and Chevrolet be combined at all Chevrolet dealerships, Cadillac to quit making trucks except they would need a small SUV or Crossover and GMC be their truck line up.

 

I support your thinking......and it makes sense. So, unfortunately GM leadership, is not an advanced (more than a couple years) thinking group, and probably wouldn't do this.