Looking to get a pre-owned 2010 PTT and the car I'm looking at is equipped with the PDCC + electronic rear locking differential. It's a $4460 option. How useful is this? I live in Florida (no snow/ice) and won't be putting the car on the track. Just curious.

 

on a used car I think it should add nearly zero to the value of the car - I drove a car with PDCC and the differential and certainly my "average" abilities could not discern any difference than a car without it.