nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqcnhpe90xl06r4gj5xurkk87n2r3dzkaexpk5c53r7jgmdey87ruqy4hcrk (nprofile…hcrk) for normal civilian driving on public roads I can't see what value W3W adds over navigating by postcode (I still use a standalone TomTom navi as my car doesn't have this built in and the screen form factor/aesthetics are better (I don't trust "free" navi apps in case they decide to put ads or other distractions on screen)).
For emergency situations and more precise locations we already have the OS grid system..
https://www.cityam.com/what3words-finances-still-in-red/