The Tatra 603 was a large, luxurious, rear-engined sedan produced by the Czechoslovak company Tatra from 1956 to 1975. Designed secretly by engineers when the company was ordered to only build trucks, it quickly became the vehicle of choice for high-ranking Communist party and industry officials. It featured a streamlined, all-steel body and a unique air-cooled 2.5-liter V8 engine mounted behind the rear wheels. The six-passenger car was rarely available to the public and came initially with a distinctive three-headlamp arrangement.