However, if GM truly wants to save costs, minimizing the number of "options" or instead grouping options into "packages" would be a way to save on labor costs. They've started doing this to some extent, however, it could go as far as where you would select model and color then the "options package" you want. Anything else could be a "dealer installed option".

In the end this would reduce the initial production costs and perhaps even speed up production. However the buyer might not see much relief as the dealer add-on costs would go up. The real advantage to the buyer is the ability to walk into the showroom and see the car they want, and then choose from a shopping list of accessories that the dealer could install at a small extra cost. The add-ons could be as minor as ground effects, rims and stripes, or as much as adding a supercharger.

I think its important to keep it simple.