Gyrobus
![Gyrobus G3, the only surviving gyrobus in the world (built in 1955) in the Flemish tramway and bus museum, Antwerp.](/Images/godic/202501/16/Gyrobus_G3-11139.jpg")
![Loading up the flywheel.](/Images/godic/202501/16/Gyrobus_aan_het_opladen1140.jpg")
![Loading up the flywheel.](/Images/godic/202501/16/Gyrobus_bij_oplaadpunt1140.jpg")
A Gyrobus is an electric bus that uses flywheel energy storage, not overhead wires like a trolleybus. The name comes from the Greek language term for flywheel, gyros. While there are no gyrobuses currently in use commercially, development in this area continues.