Two-Wheeled, Self-Balancing Gyro-X vehicle from 1967 in Action

The Gyro-X is a 2-wheeled car able to stay and drive perfectly balanced thanks to a gyroscope (55 cm in diameter) fitted in the front. The project was born in 1967, designed by Alex Tremulis and gyroscope specialist Tom Summers, with a budget of $750,000 (about $6 million today) but it was soon abandoned due to Gyrocar Company’s bankrupt, ran out of funds to perfect the product.