When not one person is willing to list a valid detailed procedure,
one must scientificly vet that converting objects from google sketch up into BVE form
has not truely been performed, is not possible at this time, and is "urban myth"?
If i recall, The proper method to go from sketch up to a usable BVE model is to export it to Blender (
http://www.blender.org/) and then export it as a CSV file. There might be another step, but i don't remember. The only problem is that a creation in sketch up, when exported for bve use, will contain too many polygons and will not be playable. The R46 is a special example because it was fine tuned and had many, many polygons removed from it, so that it will be playable.