The city of Orebro from Sweden was the first to open its geodata under the new ODbL license, which requires attribution and condition alteration.
Now in OpenStreetMap about 90,000 km is added. roads every week. The total number of roads spread all over the world is quite impressive from 24 million km and this reflects only about half of the total data. More research can be found here .
Render 3D globe , which works directly in the browser using WebGL, is already available. Watch the video - impressive ! Such a Google Earth only in a browser with an OSM card.