Troy graduated Seminole High School in 1940, married Dollie Twiggs March 18, 1941, and in December 1942 enlisted in the United States Army Air Forces during World War II.
While driving near the Texas–Louisiana border, he pulled into a fast food restaurant that used a series of intercoms at each parking spot to allow customers to place orders directly from their cars.
Smith obtained the design of the communication system and upon returning to Shawnee he sold his interest in the Top Hat and Log House to McKimmey in 1959.
He moved about a mile south on Harrison Street and built a new drive-up which allowed customers to place orders and have them delivered to their car within three minutes by carhops on roller skates.
[3] In January 2007 Smith and his wife donated Sonic stock valued at $3 million to the University of Central Oklahoma, the largest unrestricted cash gift in UCO's history.