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

Jaguar C-X17 concept (2013) design boss Ian Callum on interior design

As with all concept cars, the Jaguar C-X17’s interior is the least production-viable element of the entire design, but it does give vital clues to the direction that design boss Ian Callum and his team are evaluating for the future. The focus is on clean, strong, flowing design, one that shuns clutter for pared-back simplicity. Open the door and you’ll notice both the sense of space and the small F-type steering wheel and four individual bucket seats, the latter two elements suggesting a nimble, involving driving experience.

Tomorrow's world: lightweight carbon composites

Once all the dust settles on The Great Battery Farce (the idea that the world's ills will be taken care of by sticking a battery in everything that moves and charging it up) we may eventually face up to the fact that the best way to move something around more economically, is to move less of it. That means making things lighter, a lot lighter. Car makers are working on it and manufacturers like Audi and Jaguar have already become masters in bringing aluminium to the mass production.

BMW: Don't fear the stop/start system in the 2012 3-series

BMW is taking a calculated risk by installing an automatic stop/start system on its best seller, the 3-series, for 2012. But company brass is optimistic that American consumers will adjust to the relatively foreign technology. "Many customers will enjoy the car very quickly," said BMW board member Ian Robertson, who oversees sales and marketing.