Perhaps Teague's strongest effort ever was the "handsome design" of the 1970 AMX/3 that AMC developed with help on the chassis from Italian sports-car engineer Giotto Bizzarrini and road testing and development from BMW. Before he and his team of designers settled on the final design, a fiberglass pushmobile was made with the molds taken from the final clay mockup. The AMX/3 is one of the most unusual cars to come out of Detroit in the late-1960s featuring an internationally sourced components, a top speed of , and potentially the Ford Pantera as its closest competitor. Teague was instrumental in moving the car to production at a reasonable cost, but upcoming U.S. bumper regulations and other issues would have inflated its price beyond volume viability.