Wankel Rotary Engine
Felix Wankel, a German engineer, invented the Wankel rotary engine in the 1950s. Unlike traditional piston engines, the Wankel engine uses a rotor that spins inside an oval-shaped chamber to create power. This design allows the engine to be more compact and lightweight, while also providing smooth and high-revving power (via How a Car Works).

However, the Wankel engine has some drawbacks, including lower fuel efficiency and higher emissions compared to traditional piston engines. Various vehicles have utilized the Wankel engine, including cars, motorcycles, and airplanes, and its distinctive technology continues to captivate and intrigue enthusiasts of the automotive industry.