GPS Nav: that is a feature a ton of cars have. Else, reading signs and basic orientation is a godsent.
Music: Why do I need my phone out where it can distract me, when bluetooth works fine from my pocket. And if a car doesn't have bluetooth radio works fine.
It can be convenient when cleaning stainless or glass since it can dissolve grease and dries up streakless. Otherwise window cleaner spray also works amazingly.
Otherwise no idea why one would use it on other surfaces.
Mechanical anchors handle in my experience pretty much everything. I like the plastic ones from Fischer. And they make them for pretty much any application you could wish for.
Get a good salted cultured butter (or make your own, it isn't that hard), spread it on freshly baked slice of sourdough bread. Enjoy your ascent to heaven.
Yes that means you can't run anymore. But you can still walk home.