I think GM needs to approach this intelligently. My perception of Toyota was formed when I drove a Camry and it instantly struck me---the damm thing makes NO noise. Its like you are driving 2 inches above the road.
Can GM replicate this? Can GM get a characteristic that you and I would talk about similarly and do it at a good price? Anything is fine--Great interiors, best fuel efficiency, really quiet, really powerful etc.,take your pick.