Looks like we are adding to the group with a Model S P90D(L).
The X may pose a greater challenge in that Tesla has changed the diagnostics connector. The Roadster/early Model S connector is white while the newer cars appear to be being built with a blue connector. Initial work with the X will involve using insulated sockets over the Gnd, +12V, CAN+ and CAN- pins until we can source the proper mating connector shell for the new blue connector. Anyone considering participating may want to give this some thought.