Around here the salesfolk don't discuss the rebate at all and it isn't used in advertising. Thus they can't be accused of deceptive advertising.

In any case, it wouldn't be "bait and switch". That would be if they advertised a low price for the car, and when you got to the dealer you found that the car wasn't available or was undesirable for some reason, but they did happen to have another one at a substantially higher price.