We have created a new plugin again. This one acts as a position source for BuddyTracker or VehicleTracker services of GPSGate.com server. The position data can be submitted either in real time while the car is moving, or uploaded in batches when a fast/cheap internet connection is available.
The next step is to enable the "downlink" of information from the GPSGate and processing it on the client. The most obvious usage will of course be display of other cars (and people with GPSGate software on portable devices) on the map, but there might be more.