It says in the Autoweek review that the LR Model 3 uses Bosch VDC but for the performance model they've developed their own. So, I guess we'll see if they've managed to do something that no one else has done! It does say that they're transferring torque from side to side which I assume can only be done with the brakes unless it has electronically controlled differentials. There are a bunch of cars that do that but they've all performed poorly in aggressive driving (overheated brakes plus you're obviously losing power). Apparently McLaren does it on their cars successfully though.