I wish you good luck finding a job selling for another brand, because GM won't be around if they don't change. People told Michael Dell he couldn't sell a build to order computer, but he changed an entire industry. The auto industry needs to move forward and change. Dealers won't need to worry about margins when the factory has no cash and the bailouts end.
Bowtie...plain and simple, if GM doesn't reduce their cost structure (from mfg. to point of sale), they won't survive. They can't take it all from employee pay/benefits, they have to be a more efficient, lean company. A good start was getting rid of redundant brands selling the same cars. Dealer margins are low because there are too many dealers competing against each other and all of them have the mindset that they need one of every combination available or they will lose a sale to the dealer down the street. The model is wrong.