Andre Lewis on Tech

Google's free version of the sketchup 3D modeling tool includes two awesome features:

• the warehouse, an online repository of 3D models of any scale, which are downloadable and reusable by anyone. And anyone can upload to the warehouse as well. There's a great example in the video below of a user who uploads a gate, and someone using the gate model in their house.
• Google Earth integration -- anyone can "find their house in Google Earth, import the aerial photo and terrain into SketchUp, model their house (or apartment, or whatever), and send it back to Google Earth —for free".
  

Furthermore, everything can be tagged to a real-world location:

Models shared in the 3D Warehouse will even be able to be geo-referenced, meaning that they'll "know" where they belong in the world. When you submit your models to the warehouse, you'll have the option of including geo-referencing information

Watch the video, you will be impressed: http://download.sketchup.com/downloads/training/tutorials50/The_Story/The_Story.html