The Pontiac GTO is an automobile that was built by American company Pontiac in generations from 1964 to 1974 model years, and by GM's subsidiary Holden in Australia from 2004 to 2006. The first generation GTO was a muscle car of the 1960s and 1970s era. Although there were earlier muscle cars, the Pontiac GTO is considered by some to have started the trend with all four domestic automakers offering a variety of competing models. For the 1964 and 1965 model years, the GTO was an optional package o...