Well, individuals often recognize contribution services for the actual charity, and this is where the confusion begins. When you go to the internet and type in your browser "car contribution" you wind up with several pages of websites all saying the same thing, we "work for a good and worthy cause".
Take note, some if not many of these "vehicle donation services" are service entities in themselves. Be careful of who you call to contribute a vehicle, do not be tricked by the whole the donation process is simple, do your research!
Remember, these services are middlemen and take a commission as well.