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

Chrysler Sebring

Chrysler has shown pictures of the 2007 Sebring, a mid-sized sedan that will enter production in America later this year. New from the ground up, the dynamic exterior borrows cues from the Crossfire in the front three-quarter, while a part-masked C-pillar helps accentuate the Sebring's arched cab, eschewing the 'chopped' look of the larger 300C. The urbane interior features an IP with a broad panel theme, reminding slightly of the Mercedes-Benz CLS/> It will be available from launch with the option of two V6 engines and, unusually, a new four-cylinder motor that produces 172PS from 2.4 liters.

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.

Motorcycle helmet integrates head-up display, GPS and rear-view camera

Silicon-Valley start-up Skully Systems will ship its 'world's smartest' motorcycle helmet from next year. It costs $1,399, and draws together a host of technology features that are already becoming familiar to car drivers and makes them available to motorcyclists for the first time. The helmet's visor features the firm's 'Synapse' see-through head-up display system that shows information like navigation data, bike speed, and a 180-degree angle feed from the rear-view camera mounted on the back of the helmet.