We've all seen the advertisements where you can donate your old car -- even if it's not running -- to a charity to help support its good works. The charities make it easy: They come to you, pick up the car and do all the work. But the reality is that many of these third-party programs give very little money of the value of the car to real nonprofits. The for-profit towing companies either resell the car to a new owner or sell it for scrap metal. Then a small percentage goes to a benefiting nonprofit. If you do want to donate a car, go directly to the charity you want to support. Better yet, sell it yourself and donate the proceeds.