>>292438310
I got renderdoc to work on it, using instructions from https://github.com/eliemichel/MapsModelsImporter .
It's pretty obfuscated still; the raw mesh input to the vertex shader is scrambled, but the vertex output is mostly intact; curiously there's a drawcall that draws almost all the triangles (DrawIndexed(420)) then another call that draws a few missing triangles (DrawIndexed(6)), for each material of the original model.

Per https://blog.exppad.com/article/importing-actual-3d-models-from-google-maps you can export the vertex positions (and texcoords) from renderdoc as a csv, and write a quick script to turn it into an obj. I'll see what I can do.