As the Presidents Day holiday awaits us on Monday, it may be helpful to point to a new car ad on television, one that, while humorous, casts some light on the question of just how well-informed Americans are about the history of our nation’s elected chiefs.

In the ad, actors who are comically dressed as Abe Lincoln and George Washington talk about what great fuel savings they are getting, and the visual punch line is that the guy manning the gasoline pump is Benjamin Franklin.