GTO=Gran Turismo Omologato, what Pontiac named their '64-'74 (& re-released in '04) muscle car. Also known as a "Goat". Check out:

http://www.ultimategto.com

The information we pick up around here...the car was named after a Ferrari.
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Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein