At the height of his success, Isaac Hayes (famed for his role as "Shaft") purchased a gold-plated 1972 cadillac. Hayes was later asked how one made a gold-plated car. "You dip it in gold," he helpfully explained. "Even got the screws on the license plates..."
[The car (with its TV, telephone, and "a refrigerator in the back for the beer") currently resides in the Stax museum of American Soul Music.]
Sources
"Late Night with Conan O`Brien"