The answer is “no.” A car dealer is not required to sell a person a car just because that person underwent some difficulty to get to the dealership. Generally, ads are not offers but invitations for offers. Although Betty might argue that she relied to her detriment (the doctrine of detrimental reliance) on the ad, the fact that Betty underwent some hardship to make her offer to purchase the truck does not obligate the dealership to accept her offer. This pickup truck you got advertised, the one here for eleven ...