But buyers' of the 7 series or any other high end vehicles think that features like the power tailgates are part of a luxurious experience that comes with purchasing and driving expensive vehicles. These car buyers, and dare I say many of them, are not drivers with particular interest in the Nurburgring lap times. So to them, the latest gadgetries, no matter how unuseful, make quite an impression. I guess soft-close doors is also one of those luxurious features that differentiates high end vehicles from lowly Toyota/Honda. Stepless/stageless doors are quite cool too to those who are unfamiliar. It goes well with bragging rights, self-satisfaction, and sometimes, god forbid, being actually useful.
The latest Audi A8 I read online has a feature that can recognize a hand-writing. To me, that'll be useless. But CEOs looking to make themselves feel more important will appreciate just having such gadget, even if they never intend to use it.

And should anything break, the cost to fix will be less than what they spend weekly with their golf buddies at the country club.