My dad has minor dementia and his doctor had his driver's license revoked. He continued to drive, so at the urging of his doctor and other health professionals I took his keys. He wants his keys back and swears he needs them so friends and neighbors can drive him. I live 5 hrs away so I can't monitor his activities except through neighbors. His short term memory is so bad that every time he wants to go somewhere he sits in his truck and tries all his house keys in the ignition. However he is still able to remember at least once a day that I took them and gives me a harassing phone call. Tired of being the bad guy....should I give him the keys and trust that he will find able drivers? Would I be exposing myself to liability if I did so?
Where does he need to drive to? Can groceries be delivered? What can be brought to him? What can't like doctors appointments?
Just because your father says he has friends and neighbors to drive him around doesn't mean it's true. His friends and neighbors could be worse off than he is.
Other than transportation, is your dad independent? Does he live by himself? Can he take care of his activities of daily living without assistance?
How about selling the truck? Why have it sit there tormenting him?