I thought I should post something on an area I've been working in more recently, so here is my simulation of the Simultaneous Localisation and Mapping (SLAM) technique, as applied to an autonomous vehicle navigating through waypoints across a feature-rich terrain.
Managed to export my VRML simulation to X3D, and embed it here with the HTML5 X3DOM Framework. Note that you will need to use a supported browser in order to view the model.