That's excatly what my wife said. She said even if they had replaced the front right quarter and the hood and etc... do you think they would actually tell you "hey, before you sign on that line, you should know your car was involved in an accident".
Like I mentioned, as long as the vehicle is in-tact and it has never been in an accident, I have no problem taking responsibility for my signature on that dotted line. If, however, they never disclosed a prior accident/incident (so much as a replaced grill), I would sue them with all my might. It's actually quite common that dealers repair cars and sell them as new. A case I read about in Michigan involved a $30k Cherokee. After discovering it had been in an accident and repaired nearly 6 months in to the ownership (someone at the service department finally spilled the beans), the owner won a $85000 lawsuit.
This is all worst case scenario, and I'm looking forward to having my car detailed properly. Other than that, it drives beautifully and I seriously doubt my car saw an accident. I will probably not waste my time/money running a Carfax. Someone I know totaled his M3, bought it back from insurance, had it rebuilt by a shop in San Francisco, and sold it to an unsuspecting customer who ran a clean Carfax report prior to purchase. Carfax is no guarantee to finding the history on the car, unfortunately...