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

Mazda RX-8 – a tidy before the Mazda RX-9?

Mazda is updating the RX-8 for the European market, before the launch of the RX-9 in 2012 So what exactly is the new, updated Mazda RX-8 going to get? In all honesty, probably not much beyond a minor tweak or two. It will still use the 228bhp Wankel engine that sets it apart from the crowd, and should still be a bundle of fun to drive.

Concept Car of the Week: Saab Aero X

In January 2005 Bryan Nesbitt, then-executive director of GM Europe Design, charged the 15-strong Saab Advanced design team in Gothenburg, Sweden, to create the "ultimate vision of the brand". The design team – led by head of Advanced Design at Saab, Anthony Lo – worked on a number of sports car proposals, which were considered 'the jet fighters of the road.' The chosen proposal by Alex Daniel was for a large, front-engined sports car that would become one of the most universally acclaimed concept cars of recent times. Of course the Aero X's door arrangement – complete with huge, forward-hinged canopy – is its party trick, but even without the theatrics the car's proportions, surfacing and graphics are exceptional.

What's different about electric cars this time? A column by Kevin A. Wilson

Thirteen years after the General Motors EV1 was rolled out to cheers from advocates of a revolution in the way we power automobiles, those same advocates are out front cheerleading yet another revival of an idea as old as the automobile itself: Run 'em on batteries. Batteries aren't a source of energy. They're just storage units, a convenient means of making power portable.