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

Concept Car of the Week: Citroën C-Airdream

In the 1990s and early 2000s one of the most charismatic, brave and forward-thinking car makers, Citroën, had been reduced to the maker of budget, mainstream Euro boxes such as the Saxo and Xsara. The company hinted at its intentions to break free from its mundane existence as the maker of line-of-least-resistance rental cars with its Lignage concept in 1999 that harked back to its past large sedans, especially the CX. But it was at the 2002 Paris motor show that Citroën put a stake in the ground with its fabulously avantgarde Citroën C-Airdream concept.

Ford, GM work together on new nine-, 10-speed transmissions

Ford Motor Co. and General Motors are developing nine- and 10-speed transmissions jointly for use in cars, crossovers, pickups and SUVs. The rivals say partnering on the automatic front- and rear-wheel-drive gearboxes will get them to market faster and cheaper than each automaker could do on its own.

Zaha Hadid Z-car concept

Zaha Hadid is an Iraq-born and London-based architect, who became the first female recipient of the Pritzker Architecture Prize in 2004. Her ambitious buildings have earned her much acclaim, and having designed the latest BMW factory, Hadid has now turned her sights on cars with the unveiling of the Z-car concept. Not to be confused with the similarly titled Nissan/Datsun, Hadid?s Z-car is a small plastic-bodied monocoque with a prominent lifting door.