These cars are full function proportional radio control 1/32 scale models. They are less than 5 inches long (125mm). When they were made back in 1991 there were no production radio control cars this small available in the United States. They have independent suspension, ball differentials, and are NTR ( no tools required ) servicable. The ZZTop Ford also has real metal body parts & working head & tail lites . The Lamborgini was featured in the October 91 issue of Radio Control Car Action magazine, followed by the ZZ Top Ford in April 92.