The reason for doing this is simple. GM has too many divisions. Toyota gets by with just three (Toyota, Lexus, Scion), and it just surpassed GM in total vehicle production for the first quarter of 2008. They don't need a "semi-luxury" division and a Saturn-type divison (it's so pointless I don't even have a phrase for what type of division it is). Don't even get me started with GMC. They have no original car of their own, they're all just re-badged Chevys with a different grill. All they need is a normal, no-frills, cheap car divison:(Chevrolet). A luxury car division:(Cadillac). And a young-people/performance division:(possibly Pontiac I guess). That covers pretty much all the bases. Just look at the example set by Toyota and you'll see that the answer to GM's problems is obvious.