In the early days of automobiles, all illumination aside from the very basic exterior lights was either optional or not available at all. Having light bulbs in various places to illuminate the passenger compartment, glove box, even dials became standard as manufacturing methods and automation dropped the costs enough.
Now, though, Mercedes-Benz seems very pleased about completely giving up the use of conventional bulbs, all of which have been replaced with modern LEDs in their latest W222 S-Class sedans. So is this really useful, or merely a marketing scheme to make the car seem different and modern? The German automaker would of course be in favor of the former, which they do back up with several arguments.
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