Well, I'd be annoyed for sure, and I might think twice about buying from him. But. I've never gone for a test drive without doing quite a bit of online research first, and by the time I've narrowed it down to the 2-3 models I actually want to test drive, I ALWAYS know the specs better than the salespeople who have to know a little bit about the dealer's whole line. So, on that basis, I might be inclined to give the guy a break, too.