On November 29 , 1944 , three-time 500 winner Wilbur Shaw came back to do a 500 m tire test for Firestone . The test was approved by the government . With the end of the war in sight , on November 29 , 1944 , three-time 500 winner Wilbur Shaw came back to do a 500 m tire test approved by the government for Firestone .