London mayor, Boris Johnson, today unveiled the design of the new London bus, based on the old Routemaster model.

The new bus will be powered by eco-friendly hybrid technology. According to Transport for London, it will be 15 percent more fuel efficient than current hybrid buses and 40 percent more efficient than diesel double deckers.

Lightweight materials help to keep emissions and fuel consumption down. TFL also reckons that the new model will be much quieter than any existing bus.

An open platform, reminiscent of the previous Routemaster, features on the new design and allows the reinstatement of a hop-on, hop-off service.

Boris Johnson, said: "This iconic new part of our transport system is not only beautiful, but also has a green heart beating beneath its stylish, swooshing exterior."

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