A car dealer lists a vehicle on the internet for a special price but when we went to the dealer to buy that vehilce they said it was the wrong price

This is a fact pattern that every law-school student studies in the first year. The question is whether the advertisement is an "offer" that a would-be purchaser has the power to "accept." In general, courts have ruled that the advertisement is merely an invitation to dicker and not an "offer." This makes sense, insofar as advertisements go through a lot of hands and errors are not uncommon.