Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Autoweek's Best of the Best winners announced

Today, Autoweek announced the winners of our yearly Best of the Best competition with the Porsche Boxster S and Mercedes-Benz GL taking top honors. Presenting the awards, editor Wes Raynal said, “It was a tough call to make this year with so many incredible cars and trucks that debuted. After a year of evaluating everything on the market, the Porsche Boxster S and Mercedes-Benz GL rose to the top, really earning these two awards.” For Best of the Best awards, the Autoweek editors considered publicly available, all-new or substantially new 2013 model cars and trucks.

2013 Audi RS6 Avant: 190mph & 0-62mph in 3.9 seconds

The 2013 Audi RS6 Avant has been revealed with a V8 552bhp Twin Scroll Turbo delivering 0-62mph in 3.9 seconds and up to 190mph. The 2013 Audi RS6 Avant comes with a 552bhp version of the twin-scroll V8 found in the latest, most powerful Audis (and the Bentley Continental GT V8) which, despite being 28bhp down on the power of the old V10 RS6 (although it does have 37lb/ft more torque – 516lb/ft) can get to 62mph in a supercar-bashing 3.9 seconds and, in standard guise, 155mph. But spend more than the £77k Audi will want for the new RS6 Avant by opting for the Dynamic Package and top speed increases to 174mph.

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.