For a century the petrol engine has remained largely unchallenged, seeing off all pretenders to its crown. But with dangerous climate change on the horizon and a host of contenders looming large in the rear view mirror, is the petrol engine about to be overtaken by a new fleet of cleaner, leaner rivals?
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[Source: Science and Technology: News & Videos about Science and Technology - CNN.com - Posted by FreeAutoBlogger]
