He was suspicious. He's a bright man and would have noticed if the van never left the driveway. Cars are a mystery to me. I couldn't tell you what makes them go any more than I could tell you how TV works, or how it's possible for 100 percent cotton pants to be wrinkle-resistant.
Mechanics know how cars work, which is why guys with greasy hands wield all the power.
Taking my vehicle and going home is no longer an option. Driving our van is an adventure in uncertainty. It will take us halfway across the country without incident and a week later balk at a trip to the grocery store. There's just no telling. They are so important in our daily lives.