> This doesn't even include the cost of hiring ~20 engineers to handle the buttons. ~6 people to check appearance and do testing... It doesn't include the assembly costs on the line. That 1% was just the cost of button + wire.

That doesn't make sense. $1 uninstalled might make sense for a fancy custom-molded button, even if it's too much for a generic button. (I'd rather have some generic buttons with labels than use a touchscreen, by the way.) But there's no way a few feet of signal wire and the proportional share of power wires get anywhere near $1 uninstalled.

Also I can find entire car stereo units with 15 buttons on them for $15? That kind of integrated button is cheap, has been common in cars for a long time, and can control things indirectly like a touch screen button if that's cheaper than direct wiring.

You are underestimating the quality you are getting with a car. The light colors match perfectly with science and experts. Its wild how much effort goes into it.

Your after market has not been tested to react with sunscreen.