The Gyro-X is a unique 1967 two-wheeled prototype car developed by designer Alex Tremulis and gyroscope expert Thomas Summers. It was created as a potential solution for future transportation, offering a narrow profile and claimed high efficiency. The car uses a single, large, hydraulically-driven gyroscope, spinning at up to 6,000 rpm, to keep the vehicle balanced at rest and assist in banking turns. Although it never entered production due to funding and high-speed instability issues, the sole prototype, originally powered by an 80-horsepower engine, is being fully restored by the Lane Motor Museum.