Juicing up: Hong Kong transport goes electric

The residents of Hong Kong - one of the most densely populated places on the planet - make 12 million journeys every day in cars, trains, buses and ferries.

In an effort to combat pollution and cut carbon emissions in half by 2020, the city is turning to electric vehicles.

Adam Shaw puts some of the new hi-tech vehicles to the test and finds out that not everyone is convinced that they are the solution.

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