Sadhguru - Story of Mr.Henry Ford

Henry Ford, after his death, finds himself in the fifth level of Heaven and feels insulted as the Chairperson of Hindoustan Motors is in the first level. He questions Saint Peter and is granted an appointment with God. During the meeting, God explains that while Ford's cars were enjoyable, the other cars inspired people to say 'Oh my God,' hence the higher placement.

How did people react when they drove Henry Ford's cars compared to the other person's cars?

What was the significance of the phrase 'Oh my God' in the context of the story?