The three - piece rear drive shaft goes to an open differential flanked by clutch packs on each half shaft that are electronically controlled. (autoweek.com)
If the front drive shaft is spinning and not able to be engaged, then the chain in the transfer case could be broken. (yourmechanic.com)
It's connected to the V12 through with aluminum torque tube and a carbon - fiber drive shaft. (autoweek.com)