Because it relies on locking one set of brakes, thus preventing the wheels on one axle from spinning, a line lock seems difficult to implement with all-wheel drive. But Ford's patent application ...

And you can register more than one drive as well. The system is secure by design: the ability to log on with a flash drive can't be replicated just by copying the flash drive on another PC.

Center lock wheels seem like one of the easier racing mods to bring to your road car—but the off-track benefits are mixed.