West's Encyclopedia of American Law | Family Car Doctrine

A RULE OF LAW applied in particular cases of NEGLIGENCE that extends liability to the owner of an automobile for damage done by a family member while using the car.

The family car doctrine, also known as the family purpose doctrine, is based on the premise that a car is provided by the head of the household for the family's use and, therefore, the operator of the car acts as an agent of the owner. For example, if a husband is the owner of a car and his wife uses the car for one of the purposes for which it was purchased, such as grocery shopping, then the wife is acting as the husband's agent in carrying out such purpose. Under the family car doctrine, the owner of the family car (in this case, the husband) is legally responsible for any damage caused by the family member...