Yes thats must me it K.A.R.R. robot mode. I wonder how close he is to a transformer i'd buy the toy if they made one.
Found a pic

KARR is mentioned in the new Knight Rider series episode "Knight of the Living Dead", and was said to be a prototype of KITT (Knight Industries Three Thousand). The KARR acronym now stands for "Knight Auto-Cybernetic Roving Robot-Exoskeleton" and instead of an automobile, a schematic display showed a humanoid-looking robot with wheeled legs that converts into an ambiguous off-road vehicle. Similar to the original character, this incarnation of KARR had an AI that was programmed for self-preservation and was subsequently deactivated and placed in storage after killing seven people.
In the episode, a spy infiltrates the Knight headquarters and activates a hidden self-destruct program within KITT placed there secretly by Dr. Graiman. In order to save KITT's operating system, (which is given priority over KITT's memories), Michael and Sarah transmit the files to the back up computer at the headquarters, but the transmission is also intercepted by an unknown third party. It is stated that only KITT, KARR and the base back-up computer are the only systems able to run the program, and leaves Dr. Graiman with only one conclusion that someone is trying to reactivate KARR.[2]
The new Knight Rider series is supposed to be a continuation, not a re-imagining of the original series, however it appears KARR has been "retconned" for the continuing franchise. KARR is set to appear in the first season's 12th episode "Knight to King's Pawn", scheduled to air January 21st 2009 with Peter Cullen reprising the role. Furthermore, KARR may be significant to those parts of Mike's past he cannot remember – when looking at KARR's schematics, he evokes a sense of déjà vu, and says that he feels like he knows KARR somehow.