The ESV was a 2-door, 2-seater concept car built to conform to the Japanese government's Experimental Safety Vehicle specifications and shown during the 1972 Tokyo Motor Show. Weight had to be under 1,150 kg (2,535 lb) and prevent serious injury in a crash with a 1,814 kg (4,000 lb) vehicle at 80 km/h (50 mph). In order to provide adequate crumple zones while remaining within the size given by the government specifications, Toyota was forced to make the car a 2-seater. The vehicle at the show was the second ESV made. Unique alloy wheels were used.