Dad is 90, congestive heart failure, walks very slowly with 2 canes, can not stand alone. But he appears to be in his right mind. He still drives and goes to the local bar for 2 martinis almost every day. Then he comes home in a nasty mood and passes out or picks a fight. I have tried to get his Dr to stop his driving. I have talked to the police about stopping him as he leaves the bar. No one wants to do anything."We don't want to take his last bit of independence away from him" If he causes an accident and has been drinking, can they come back on me because I didn't stop him?