Den,
I have never wavered from my opinion that to advertise a car giving the impression that various facets of it's appeal have been proved by road-test, whilst at the time of printing those claims the car doesn't exist is unbelievable as well as unacceptable. However, I sometimes worry that people who haven't been aware from the outset and may be coming into the story since the car has actually existed may misunderstand your angle on this............