June 15, 2004In regards to the braking when stuck idea:
I've heard that Hummers use this with their 4X4's. With an open differential, if one tire loses traction the other is useless. Hummers have a computer controlled individual wheel braking system. When one tire loses traction, instead of that tire spinning and the one on the ground sitting motionless, the computer applies brakes to only the tractionless tire. This means that the tire on the ground that you want to get power to, actually gets power. Of course a locking differential would do the same thing, except you can't drive that on the highway, and what yuppie in a Hummer would take the time to actually manually lock a diff.