Zender Fact 4

The Zender Fact4 Biturbo was a concept sports car designed by Günter Zillner and manufactured by Zender GmbH in 1989. The car was intended for production, but production never came to be. With a carbon fiber monocoque, the car was powered by a 3.6L twin-turbocharged Audi V8 producing 445 hp through a 5-speed manual. A open-topped version known as the Fact4 Spider was also produced, with less horsepower; it was also intended for production but ultimately never left the prototype stage. The Fact4