Batman had the Batmobile -- the Monkees had The Monkeemobile! Custom car designer Dean Jeffries created the Monkeemobile out of a 1966 Pontiac GTO convertible. Jeffries pushed back the rear seat, giving the car a stretched-out appearance. He also tilted the windshield up, and added an old-fashioned touring top. Jeffries built two cars in three weeks, one for the TV episodes and another for the custom car circuit.