 Complete the following phrase:  The 1953 AAA Championship Car season consisted of 12 races, beginning in Speedway, Indiana on May 30 and concluding in Phoenix, Arizona on November 11. There was also one non-championship event in Mechanicsburg, Pennsylvania. The AAA National Champion was Sam Hanks, and the Indianapolis 500 winner was Bill Vukovich. Chet Miller died while practicing for the 