Yes, I'd be annoyed, but I agree with Oak, too. Granted, I haven't bought a new car in quite some time, but I tend to research the heck out of things before I ever talk to a salesperson (which is why a number of the bike shops in town have annoyed me; they don't know their stock very well).
But I'm still stuck on getting rid of an 8-year old Honda with only a 100k miles on it. Unless you're already experiencing a lot of problems, my guess is that car has a lot of life in it. Or maybe I'm just envious that you're potentially getting a new car. I have a 12-year old car that's approaching 100k, and I'm hoping to keep it a while longer since it otherwise runs (mostly) well and my job situation become a bit iffy next year. I'm so ready for a new car though......
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher