The sum of many details that stir emotion is a whole that is emotionally compelling. If cars (or any consumer product) are purchased emotionally, and this featu

The sum of many details that stir emotion is a whole that is emotionally compelling. If cars (or any consumer product) are purchased emotionally, and this feature is perceived as cool and futuristic, surely this will incrementally add to unit sales. See also the Model 3's AC vents. Whatever their utility & whether its better than traditional ones, they are cool and futuristic and do their part to help the car stand out from the pack. Start adding all these up and you have something. Car companies outsourced all these types of parts years ago, which severely limit their ability to pursue these types of innovations. That made economic sense when they were competing against organizations with similar cost-cutting strategies, and are a product of the era in which those choices were made and the business climate that encouraged those choices, but it leaves them at a disadvantage when a company takes a very different, tech-driven, vertically integrated approach to product.