I had the "pleasure" of shopping for a car this weekend. Although the stereotype of dealing with the (used) car salesman is somewhat overblown, it is still a pretty accurate depiction of what to expect.
Car dealership ads are still very much misleading and are meant to purely bring the buyer through the front door. Financial "details" in these ads can be molded to fit most desired realities. When dealing with the salesman, actual lying never takes place. Important facts that could diminish the value of a particular car are not mentioned, skimmed over, or left to be interpreted by the buyer.
Overall the experience was a mixed bag of useful hands-on shopping and bitter aftertaste of shady salesmanship. It's hard to believe that some organization hasn't completely put the old system to rest by offering a completely transparent car-buying experience.