BILL MITCHELL’S BUICK CENTURY X, created at GM Styling, will make its international Concours debut in the Amelia Concours d’Elegance’s on March 8, 2020. Bill Mitchell was Harley Earl’s handpicked successor at GM Design and Styling. Their association seemed to go beyond the standard boss-employee dynamic. Many called it a father-son relationship. Mitchell was just 23 when Earl appointed him chief designer of Cadillac. His design of the ‘38 Cadillac 60 Special was a landmark. But Mitchell was a “B...