KARR was not evil......he just had self preservation programming. The big mistake with KARR is he thought he was superior because he was the prototype. Prototypes are usually not as good as production because they are quickly made and use inferior components. KARR 2008 is so absolutly ugly..... crap. KARR protect his friends 1982.
So what if they were mustangs I feel like it worked well the series we grew up with came back and they modernized it this is what we wanted to see another battle from the end of the first series they should try to bring it back now that cars have more chips and going electric and what if KITT and KARR got a little sister with a woman driver that would be cool.
Fact: KARR in 2008 is the same KARR from the 1982 series. Remember then there were some lights blinking at the bumper? They salvaged it and rebuilt KARR with the same AI.