Original sentence: Another poissiblity is that the disassembled parts could be partially or completely from KARR (Knight Rider), KITT's immediate predacessor and rival
Edited sentence: As KARR has changed between the two episodes, thanks to the producers, he could have changed yet again.Even though the license plate said KNIGHT, indicating it was KITT, KARR had no license plate in "Trust Doesn't Rust", and then had one (it said KARR) in "KITT vs KARR".It is possible that the disassembled car in Graiman's garage was that of KARR, and not the original KITT.KARR was seemingly destroyed in the third season episode "KITT vs KARR", however, among the reckage, KARR's CPU was still functional.That prototype was KARR.The 2008 movie seems to forget that there was a prototype built six months before KITT