1958-1962 Corvette Parking Light Lamp Bezel on 2040-parts.com

Heifer fuel

Unlike most people, when Michael Doyle drives past a herd of cattle grazing in a field, he doesn't see future tenderloins or T-bones. He sees fuel. The company Doyle co-owns, North Star Biofuels, is about to start production of biodiesel at a new $15 million, 20,000-square-foot plant in Watsonville, Calif., about 60 miles south of San Francisco.

Modified supercars at SEMA 2013 in pictures

The SEMA tuning and modified car show held in that centre of American excess, Las Vegas, is a melting pot for all things automotive. From trucks and busses to family saloons and hatchbacks, aftermarket tuning companies go to work making the wackiest modified versions of every type of vehicle around, showing off their wares at SEMA. Not even supercars are off limits.

Citroen Revolte concept car at 2009 Frankfurt motor show

By Tim Pollard First Official Pictures 10 September 2009 10:40 New leaked photographs of the Citroen Revolte have seeped across the internet – revealing the mysterious concept car that some commentators claim harks back to the 2CV. These Revolte photos were published by our friends over at Worldcarfans.Although we know little about the Revolte, judging by its name it's yet another electric car. And these photos reveal more of its compact style, complete with suicide doors.Citroen Revolte: the leaked photos and the official teaserCitroen issued one teaser photograph of its surprise for the 2009 Frankfurt motor show earlier in the week – and we said it looks set to be a concept car hint of the next C2 supermini.