Mazda RX 500 was the star attraction at the 17th Tokyo Motor Show in 1970. It was developed by the research and design staff at the Toyo Kogyo Company and was a mobile test bed for high-speed safety. The body of the car was constructed from plastic, which helped keep the weight down to 1100 lbs. The Mazda RX 500 had a rotary engine mounted forward of the rear axles and was capable of 125mph. It also featured multi coloured lights, at the rear end of the car, which indicating whether the car was accelerating, braking or running at a constant speed.