maybe that's it, I'm not too up on cars so I was going on what I'd seen on other automatics (granted the only ones I've seen are automatic drag cars). I'm just thinking that there is something similar to a clutch between the tranny and the engine to keep it from spinning too much, otherwise it would certainly over-rev the motor...but now thinking about it, the RPMs do progressively increase with the speed of the car while coasting so maybe it's just a fixed gear to reduce the revolutions.
::EDIT::
AHA, just thought about it again, the word I was looking for was torque converter, not transfer case
