Answer
The answer is four years. Pat Boone's variety series, "The Pat Boone Chevy Showroom," was a popular American television program that aired from September 1957 to June 1960 on ABC. The show featured Pat Boone as the main performer, along with a variety of guest stars and musical acts. The show was known for its wholesome, family-friendly content and its focus on popular music and entertainment of the time.