In the 1940s, Swiss engineers developed a new type of zero-emission electric bus that used a large rotating flywheel to store energy instead of rechargeable batteries.
An Israeli start-up company develops wireless charging technology on public buses.
American billionaire plans to build underground glass buses running at speeds of over 200km / h.
Japan seems to be moving closer to operating the public transport system automatically after a company unveils its unmanned bus, called Robot Shuttle.
The Proterra Catalyst XR is the electric bus model, with 250 miles (402km) of travel time with only one charge.
The disadvantages of electric buses such as time consuming charging, insufficient power to operate ... can be solved by the model being studied in Switzerland.
Public Transports Publics Genevois (TPG) in Geneva (Switzerland) is putting into operation.
The German transport operator Rhein-Neckar-Verkehr GmbH (RNV) is conducting a pilot project to test the feasibility of wireless charging of electric buses.