Roy Lewallen wrote:
"Cadillac, incidentally, was named after Le Sieur Antoine de la Mothe
Cadillac, the Frenchman who in 1701 built a stockade, trading post and
settlement called Ville d`Etroit now called Detroit."

Something the "Engines of Our Ingenuity" story doesn`t tell us is that
Cadillac was Henry Ford`s company which he sold to what was to become
General Motors

Best regards, Richard Harrison, KB5WZI