Query: In addition to the Humvee, what other vehicle manufactured by AM General was Schwarzenegger first to own?
Context: Schwarzenegger was the first civilian to purchase a Humvee. He was so enamored by the vehicle that he lobbied the Humvee's manufacturer, AM General, to produce a street-legal, civilian version, which they did in 1992; the first two Hummers they sold were also purchased by Schwarzenegger.