TrueCar joins GoodGuide in helping consumers obtain more information about the products they buy - information that sellers don't necessarily want them to have. In TrueCar's case, that information is simple yet elusive: just how much you should pay for a new car. TrueCar aggregates data from a variety of (mostly unnamed) sources to determine how much money other people have paid for new cars around the country. It then places its findings at your disposal so you can determine whether or not that dealership down the street is offering you a good deal. The outcome, hopefully, is that you save not only hundreds and possibly thousands on your new car but the time it would have taken to comparison shop as well.