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Car industry's green push challenged by low petrol prices

Less fuel-efficient pickup trucks and SUVs dominate sales in the US in 2015


BENEATH the hoods of the cars showing in Detroit this week lie engines that are as powerful as ever, but are smaller and, helped by direct injection, guzzle less petrol.

Carmakers have subbed out stainless steel for aluminium and other lighter-weight materials, and added...

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