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Published online 2 April 2007 | Nature | doi:10.1038/news070402-2
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Race for a green car
Multi-million-dollar X Prize set for automotive innovation.
Start your engines: the X Prize Foundation has announced a competition to build an environmentally friendly car.
The winning vehicle will have to achieve at least 43 kilometres per litre (100 miles per US gallon), regardless of the type of fuel it uses.
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