Buildout

The City of Utrecht Planning video still has me thinking. I wonder if it's possible to using a city zoning to create a 'maximum building envelope' from a zoning code, and display it using Google Earth? Just using the '3d buildings tool' in Google Earth is not sufficient--building a city a building at a time is enormously time consuming. To be efficient, it would need to be possible to do using geodata like shapefiles--A tabular format that you could edit and upload, so the 'city plan' can be updated and changed.