The car sales training films are all about grammar, and not in the usual dumb way. (Upon whom, through which, in order better to drive, I haven’t cars.) All of the sales advice can be reduced to noun cases.
This 1958 Chevy film** hits the points directly, but all of them from 1950s to 1970s repeat the same advice in different tones.
Here are the Indo-European cases** with an illustrative sentence for each. I’ve bolded the relevant noun. Nominative is a bit contrived; the others are straightforward.
Nominative: The car can serve you.
Genitive: Assume the car is already owned by the prospect. Don’t say “This Chevy has 250 horsepower”, say “Your Chevy has 250 horsepower under your control.”
Dative: Show him the benefits that the car can give him.
(eg comfort, status, fun trips, economy)
Ablative: Show him the benefits that the car can give him.
Vocative: Always call the prospect by name. His name is important to him, and you want to make him feel important.
Accusative: Always do the Test Drive, let the prospect drive the car.
Instrumental: Let the prospect see the car as a tool for pleasure and pride.
Locative: The car is in your driveway where the neighbors and boss can admire it.
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Closely related: Most of the cases are hardwired in the brain, as two-way relationships.
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** Empathetic footnote: The Youtube channel unfairly calls the film a psyop. Psyops persuade people to act badly or act against their own interests. The prospect visits a Chevy dealer because he already wants a new car and would consider a Chevy. The salesman is simply persuading the prospect to choose a Chevy instead of a Ford or Plymouth or Rambler.
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** Autistic footnote: Indo-European started with the full list above. Latin discarded Instrumental and Locative; Slavic discarded Ablative and Vocative. NGDA for sure, and possibly I, are understood as distinct and marked in the brain and most modern languages. German and Greek kept NGDA. Arabic and the Romance languages including English kept NGA. English marks NGA on pronouns and NG on nouns, but our Accusative on pronouns is actually the Dative form repurposed as Accusative. We have one vestige of Instrumental: Why was the Instrumental case of What.
Polistra's Mill 