what to do if you have the "lost" car

the story is one i can relate too. id love to have my first car back, but its long gone. knowing that, i gave my son his first car, which is the 69 valiant 2 door, and he only gets it when he is legally able to drive, and i get the car back if he decided he dosent want it anymore. if that happens, when hes 40 or 50 ill have his first car, and he wont have to sweat it.