7. Mercedes-Benz C111
The Mercedes-Benz C111 was a series of experimental automobiles produced by Daimler-Benz in the 1960s and 1970s. The company was experimenting with new engine technologies, including Wankel engines, diesel engines, and turbochargers, and used the basic C111 platform as a testbed. Other experimental features included multi-link rear suspension, gull-wing doors, and a luxurious interior with leather trim and air conditioning. (en.wikipedia.org)
Despite its innovative design and technology, the C111 was never intended for mass production. It served as a research vehicle, allowing Mercedes-Benz to explore new materials, engine technologies, and design concepts. The C111’s unique features and experimental nature have made it a symbol of automotive innovation and a ‘what-if’ in the history of car design. (tcct.com)