That's not it. The missing word is a proper noun. And it's not Ford, Shelby, nor Iaccoca.
Is the proper noun the name of a city?
Otto replied "No", but you're wrong, Otto. There is a town in Michigan named Cadillac, in honor of Antoine de Lamothe-Cadillac, (from whom the marque is named), and two other in France. Wowever, these ones are not connected to him, because his real name was
Antoine Laumet, and
Antoine de Lamothe-Cadillac was only an assumed identity.