Knight Rider is an OK game, but not one that I was ever very good at. So, I got to see this thing a lot.

After failing to do whatever it is I'm supposed to do in the game a few times, I just hold down the Select button on controller 1 and hit the Reset button on my NES

Then, the ending starts to play

Just be aware that it's one of the lamest, most unsatisfying endings you'll ever see. Which looks to be a pretty big letdown if you earned it the hard way.