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

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.

Mercedes Concept A-class (2011) first official pictures

Mercedes-Benz has released the first images of its upcoming A-class replacement.  The 2012 production A-class will be previewed by this Concept A-class, which makes its simultaneous debut at the 2011 Shanghai and New York motor shows. Mercedes Concept A-class: Wait... that's an A-class?

2013 Audi A4 Allroad quattro a familiar trailblazer

It's no secret we love our high-riding SUVs and crossovers in the United States, but cars still outsell utilities by a 2-to-1 margin. For automakers, that's a clue that there is significant sales potential to buyers who pine for an off-road vehicle but secretly desire a sportier, more carlike cruiser for the highway. For Audi, the answer is the A4 Allroad.