I can heavily recommend tuxedoOS, even on non-tuxedo machines. It’s based on ubuntu but has snaps removed and only some small tuxedo apps installed :)

How much support does it have for geodetic engineering? I’d love to be able to use more FOSS Software in this proprietary dominated work field :)

OF

I’ve driven the same general route a few times and even then, it has been quite reliable. As mentioned, it can depend on the cities and stuff, so you’re best trying it out for yourself :)

I’d like to recommend ‘Magic Earth’ to everyone, who wants a privacy respecting Maps alternative with trafic data. I used it on several >500km trips and it only misguided me once. It uses OSM maps and can navigate offline.