Vintage Bonneville Speed Shop Oval Sign. A true Bonneville Collectible Item made from heavy metal and comes with predrilled holes for an easy hanging process. Own a piece of speedway memorabilia!The Bonneville Salt Flats, located in northwestern Utah are known for land speed records at the Bonneville Speedway. There are several major events that take place there. Bonneville Speed Week in mid-August, World of Speed in September and the World Finals in early October.