A customized 1964 Pontiac Bonneville convertible formerly owned by the late Audrey Williams, mother of Hank Williams Jr., will be auctioned Friday (Jan. 20) in Phoenix. According to the RM Auctions Web site, the car was customized by Nudie Cohn, who was the personal tailor for entertainers including Roy Rogers and Dale Evans, Webb Pierce, Porter Wagoner, Elvis Presley, Gram Parsons and many others. One of 18 vehicles known as Nudiemobiles, the car has 350 authentic U.S. silver dollars embedded in the interior. The car has been in the Smoky Mountain Car Museum since 1968.