The motorized hood ornaments on Rolls Royce vehicles were a solution to the problem of people being injured by, or stealing the (Spirit of Ecstasy) ornaments.
> Today's Spirit of Ecstasy, from the 2003 Phantom model onward, stands at 3 inches (7.6 cm) and, for the safety of any person being accidentally hit, is mounted on a spring-loaded mechanism designed to retract instantly into the radiator shell if struck from any direction.