Who has told a buyer that what you have is not what they need?

I have an engine builder friend, that back in the late 70's built a 69 Hemi Dart drag car. It was tubbed, narrowed 8 3/4 with 5.13 gears, engine built for racing and so on. A few years later when the time came to sell, he advertised in Hemmings I believe. This young guy from New York called wanting to buy the car. My friend told him all about it, then the guy asked what kind of gas mileage it got. My friend told him it doesn't get gas mileage-It's a drag car! The kid kept asking about the gas mileage-my buddy didn't sell the car to him.