In the days when children's books ruled the world...
Esquire, February 1958.
Eloise, the girl who lived at the Plaza Hotel, was the
center of four famous books in the 1950s that were written by Kay Thompson and
illustrated by Hilary Knight. She was so famous that despite the fact that Eloise couldn't drive (and was fictional), Renault hired the little moppet to advertise its latest offering, the Dauphine.
(Memo to Nissan and/or GM: If you need a children's author to plug the Leaf or Volt, I'm available.)