In 1972, Peachtree City was granted its own ZIP code (30269). In 1974, the Peachtree City Public Library opened. The Georgia state legislature passed legislation permitting golf carts to be operated on city streets. In 1975, Peachtree City was named "one of America's best suburbs" by Ladies' Home Journal magazine. In 1976, Peachtree City got its own telephone exchange (487). Residents then had to dial "8" to reach Atlanta, which remained the case until digital equipment was installed in 1988. In 1976, Frederick Brown Jr. Amphitheater (then known as the Peachtree City Amphitheater) was built as a Bicentennial project and opened to the public with the production "The MacIntosh Trail", which told the story of Creek Chief William McIntosh and the Trail of Tears. (It was intended as a tourist attraction similar to the Cherokee, North Carolina, production of Unto These Hills.) When further funding was not forthcoming the project went into foreclosure. Peachtree City purchased the amphitheater at the courthouse steps in 1977. In 1979, the first traffic light within city limits was installed at the intersection of Georgia State Route 54 and Georgia State Route 74. In 1979, Gallopade International, Inc. was founded with corporate headquarters, publishing and warehousing facility in Peachtree City In 1981, McIntosh High School opened. In 1983, Peachtree City held a free music festival to celebrate the opening of several new shops and stores, including the Galaxy Games arcade. Several local bands played at the free event, including "Alliance". In 1984, Hoshizaki America, Inc. builds corporate headquarters, warehousing and manufacturing facility in Peachtree City In 1992, Peachtree City altered the length of the mayoral and council members' terms of office from two to four years. Term limits were enacted to restrict both mayor and council members to a maximum of two four-year terms. In 1994, the first Summer Concert Series premiered at Frederick Brown Jr. Amphitheater on June 17, 1994, to a sold-out audience. The first concert featured Three Dog Night. In 1994, the National Weather Service central office relocated from Hartsfield–Jackson Atlanta International Airport. In 1994, Fuller Life Chiropractic Center opened its initial office. In 1996, the Olympic flame passed through on its way to Atlanta. In 2001, the city was designated a "Tree City USA" by the Arbor Day Foundation. In 2002, Peachtree City (specifically Starr's Mill) was a filming location for the movie Sweet Home Alabama. In 2007, the city announced