Influence: The Psychology of Persuasion · chapter 5 · id influence-c5-04-joe-girard-listed-in-the-guinn

“Joe Girard, listed in the Guinness Book of World Records as the world's greatest car salesman (1,425 cars in a single year), attributed his success primarily to making customers like him through personal cards reading 'I like you.'”

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Receipts

Joe Girard, Wikipedia (verified against Guinness records)source alive

During his career (1963-1977) he sold more than 13,000 cars. He sent monthly cards to over 13,000 former customers reading 'I like you.'

Automotive Hall of Fame -- Joe Girardsource alive

Girard was inducted into the Automotive Hall of Fame, confirming his sales records and methodology.

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