The American dealer franchise system might be on its last tank of fuel.
Since the advent of the mass production of cars, their sales have been filtered through a system of dealerships not affiliated with the carmakers. By acting as the middleman between the factory and the consumer, the dealer is free to negotiate and attempt to maximize profits. The downside for consumers, of course, is that uneducated people can be taken advantage of and charged more than necessary. The upside is that car buyers have local sales people and reliable service.
Tesla wants to change things up by selling directly to consumers in a retail model that could, and probably will, revolutionize how we buy cars.