Google Earth is a natural yet still underused place for urban planners to communicate the future of cities. With the addition of the timeline feature it is possible to chart development according to phases of growth. This is exactly what a company in the Netherlands has done to illustrate the proposed changes to the station are in Utrecht.
We have captured and embedded below a short movie illustrating the use of the timeline feature:
Utrecht Urban Growth in Google Earth from digitalurban on Vimeo.
The complete file comes in at 25Mb, note it requires a reasonably powerful machine to ensure a constant frame rate.
Take a look at http://www.3idee.nl/google/index_en.htm for full details and the kmz file.