How London's taxis could go electric
Media playback is unsupported on your device
Video

How London's taxis could go electric

At this week's motor show in Frankfurt. Almost everyone is talking about electric cars - and those at the show come in all shapes and sizes.

Theo Leggett takes a look at one design that its makers say could play a big role in cleaning up public transport, starting in London.

Go to next video: Using your car inside your home