We are preparing a new release of MATSim-T. Besides the usual bugfixes, the new release will feature several improvements to reduce memory consumption for large scenarios, major speed-ups when working with large networks as well as some additional speed-ups when running on multi-cpu machines. But the most visible change will be the possibility to use Google Earth for visualization of the simulation: Every single vehicle can be displayed, and with the new timeline-feature available in Google Earth 4, the agents' movements can be tracked throughout a simulated day. Stay tuned for more detailed information once the release will be available!