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

Major restrictions suggested for learner drivers

A NEW report on potential changes to young driver training could cut accident casualties by more than 4,000 a year. The report, from transport research group TRL, recommends teenagers should not be allowed to take their driving test until they are 18, rather than the current threshold of 17. They would have to have a 12-month "learner stage" beginning at 17 with a requirement for at least 100 hours of day-time and 20 hours of night-time supervised practice.

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.

CAR tech: Audi's miracle e-fuel (2013)

Global warming; sky-high oil prices as reserves peak; spiralling crop prices and intense pressure to find fertile land – society faces immense challenges, as it strives to protect the planet and keep our cars on the move. Audi is working on a miracle fuel that could help mitigate these problems, in a facility under construction in the uncompromising, scorching environment of New Mexico, USA.  Not content with having a range more diverse than London’s World Pride parade, Audi is moving into the fuels business, in partnership with US biotech firm Joule Unlimited. The pair are developing carbon-neutral synthetic fuels, called e-fuels in keeping with Audi’s E-tron eco brand.