re: A family member with dementia and telling them they can't drive

You don't have to make the doctor the bad guy. The dad will not remember who took the car away.

Also, do not try to convince him that he's wrong or try to make him understand things. This confuses them more and pisses them off. My MIL lives in her own little world. She tells us she cooked dinner and went shopping and drove herself (has not driven in 6 years). Just agree with them. Now she said she talked to her father the other day and had a nice conversation. He died when she was eight years old. But she didn't call him Dad. She called him by his name, Glenn. Sad.