"This, as the banner already has proclaimed, is Mr. Harvey Hunnicut, an expert on commerce and con jobs, a brash, bright, and larceny-loaded wheeler and dealer who, when the good lord passed out a conscience, must have gone for a beer and missed out. And these are a couple of other characters in out story: a little old man and a Model A car - but not just any old man and not just any Model A. There's something very special about the both of them. As a matter of fact, in just a few moments they'll give Harvey Hunnicut something that he's never experienced before. Through the good offices of a little magic, they will unload on Mr. Hunnicut the absolute necessity to tell the truth. Exactly where they come from is conjecture, but as to where they're heading for, this we know, because all of them - and you - are on the threshold of the Twilight Zone."
After buying a Model A car, Hunnicut, a used-car salesman, finds that he is forced to tell the truth. After failing to sell it to a local alderman, the alderman names some of his colleagues he would like to hear tell the truth. Hunnicut manages to unload the car on someone he thinks would be much embarrassed by the truth - Nikita Krushchev."Couldn't happen, you say? Far-fetched? Way-out? Tilt-of-center? Possible. But the next time you buy an automobile that happens to look as if it had just gone through the Battle of the Marne, and the seller is ready to throw into the bargain one of his arms, be particularly carefully in explaining to the boss about your grandmother's funeral when you were actually at Chavez Ravine watching the Dodgers. It'll be a fact that you are actually the proud possessor of an instrument of truth manufactured and distributed by an exclusive dealer... in the Twilight Zone."