The Knight Rider Car toy was a black and wonderfully sleek '82 Pontiac Firebird modelled on the car used in the Knight Rider TV series. When I was a kid, I used to marvel - not at the fact it could be driven by a pompous computer named KITT - but that its steering wheel didn't have a top or bottom! It wasn't round, it was like a circle with the top and bottom cut off it!
KITT stands for Knight Industries Two Thousand and it seems that although we reached the year 2000 we still don't have talking cars with a personality (including the ability to tell very ordinary jokes) and that are able to drive themselves. Given that, I'd say the producers of Knight Rider should have done better research!
I remember getting to see KITT during its world tour (obviously there were numerous KITT's worldwide, but try telling a kid that there is more than one Santa!. I was in the State of Tasmania in Australia. I looked upon it with wonderous amazement, and still couldn't figure out how the red light on the front grill danced from side to side, or indeed, what it actually did.