The narrator admits to being someone who enjoys driving but lacks mechanical knowledge. He relies on instincts and often waits for assistance from an A.A. scout when issues arise. This approach generally works for him, but on this occasion, he finds himself without the usual help, leading to a sense of frustration.
The humor in this situation arises from the narrator's carefree attitude toward driving, contrasting sharply with the predicament he faces. His candid acknowledgment of his shortcomings adds a comical element, underscoring the theme of dependence on others despite one's bravado.