The car market is segmented into several slices. How are these distinguished?
When it comes to door skins, the supplier Johnson Controls has a good idea of what constitutes the appropriate level of luxury for each price level. They also have an eye on how these levels will change in the future. The image shows what you might expect to see in four classes of car in the near future.
Most interesting is the bottom and top. At the bottom you see features from the level above filtering down. But at the top? Where are the features going to come from and when will door-skins reach overload? As it is the top-level door skins are as complex as the entire interior of a 1980 Ford Fiesta.