Location: Toyota's absolutely massive new showroom in Al Wattaya.
Salesman: How can I help you?
Customer: I came to see the new Avalon.
Salesman takes the customer to the top of the range Avalon on display on the far-end of the showroom and starts listing the features: six airbags, JBL speakers, ventilated power seats, etc etc.
Customer: Excellent, when can I get a test drive?
Salesman: Sorry sir, our test-drive vehicle has met with an accident.
Customer: I'm in no hurry, just put me on the list and call me when it's fixed.
Salesman: I'm afraid it was a total loss, sir. It's been a month and we still don't have a replacemen test drive car.
Customer: Are you telling me you might not get a replacement?
Salesman: Yes sir.
Customer: So all these Avalons I see on the street, people bought them without test driving them?
Customer: But this is a 12000 rial car!
Salesman gives expressionless look.
Customer: In that case I guess I have nothing else to do here. Bye.
Salesman: Thank you sir.
Customer: Why are you thanking me, didn't you just lose a potential sale?
Another expressionless stare.
Customer walks out the showroom.
So you see, the product really does sell itself. The fact there is a salesman in the picture is just incidental.