How much does your 'top of the line' lane-staying sensor cost? How about your backup camera? How about automatic breaking sensors? How about all of the componen

How much does your 'top of the line' lane-staying sensor cost? How about your backup camera? How about automatic breaking sensors? How about all of the components required to integrate these sensors into your vehicle? These are all things that started high and fell low. The historical prices for each of these systems reflects this fact, as does their gradual movement through the available product line-up. They all started in top of the line vehicles that cost well north of the average person's yearly salary, and are steadily creeping into the lowliest models. I see nothing in self-driving systems that make them special in this regard. They're already largely an amalgamation of commodity components whose prices are trending downwards. You can bet on them staying a niche product forever, if you wish. I just think it flies in the face of historical evidence.