The mod is older, and they hired the modder to work on the expansion. From the blog posts the expansion is a lot closer to vanilla then the complex mods.
Sweden had colonies in north America and the Caribbean. Denmark still controls Greenland. Sweden and Norway are both colonizers in the US way, expanding boarders by stealing land from the indigenous people (Sami) etc
Google dont directly use osm, as far as we know, but they or subcontractors check the changelogs and often add newly built things hours/ days after they get added to osm, presumably from their own sources as the data is not identical.
Sweden had/has roads onthe middle of nowhere/forest that has more free space on the sides and at each end of particularly strate and flat stretches, there are oversized parking spots. Supposedly so fighter planes could refuse and rearm from mobile crews