Harold Arminius Miller, commonly called Harry, was an American race car designer and builder who was most active in the 1920s and 1930s. Griffith Borgeson called him "the greatest creative figure in the history of the American racing car". Cars built by Miller won the Indianapolis 500 nine times, and other cars using his engines won three more. Millers accounted for 83% of the Indy 500 fields between 1923 and 1928.

The Tucker 48, commonly but incorrectly referred to as the Tucker Torpedo, was an automobile conceived by Preston Tucker while in Ypsilanti, Michigan and briefly produced in Chicago, Illinois in 1948. Only 51 cars were made including their prototype before the company was forced to declare bankruptcy and cease all operations on March 3, 1949, due to negative publicity initiated by the news media, a Securities and Exchange Commission investigation, and a heavily publicized stock fraud trial. Tucker suspected that the Big Three automakers and Michigan Senator Homer S. Ferguson had a role in the Tucker Corporation's demise.