Micro Machines U.S. Muscle #5 US Collection w/5 Bonus Cars Micro Machines U.S. Muscle #5 Collection w/5 Bonus Cars! Includes 1969 Charger, Mustang GT500, 1978 Trans Am, 1971 Challenger and 1968 Camaro Convertible! Includes 5 Additional Bonus Cars! The Original Scale Miniatures! The approximate size of a Micro Machines vehicle is 1.5 inches long!