The experimental fleet of city buses were mostly in European cities, including Reykjavik and Stockholm, but also in Perth and Beijing. Together they have already carried over seven million passengers. Nine of the buses are still operating in Hamburg.
The buses were created by Daimler in cooperation with dozens of partners in business, science and politics. The project, which started in 2003, has proven highly successful and it is hoped the data collected will lead to the development of further such technology.
The buses have a range of 300km and a top speed of 80km/h. They proved popular with commuters due to their quiet, smooth operation and novel plumes of water vapour.