I think it depends where you are located and what you're selling. I have never taken a car to a potential punter but we're next to a train station, opposite a bus stop, on a main road in town and open six days a week...it's not difficult to get to us. I can understand people that can't get down during working hours but we do offer to stay late or come in early occasionally so long as they leave a deposit in advance...I can count on one hand the number that are willing to do this.
A car is most peoples second biggest purchase so i'm always amused when they can't even be bothered to take an afternoon off work to come and look at it themselves.
that was easy to solve,,,, snowflake and the flashing one was traction control,,,, his fecking wife can use google but cant read a handbook, I dread when fuel light comes on or it needs washer fluid..