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

Truth in 24 II debuts on May 5 on Speed

Tune in to Speed on May 5 at 4 p.m. Eastern to see Truth in 24 II: Every Second Counts. It's Audi's second documentary about preparing for the 24 Hours of Le Mans.

Infiniti QX56 (2011) leaks

Infiniti's doubtless very able - but visually 'Challenged' - 2011 QX56 If you’re reading this from the New World side of the Pond you’ll know exactly what the Infiniti QX is. It’s a full sized SUV from Nissan’s luxury arm Infiniti, aimed right at the North American love of big 4x4s, but also sold in the Middle East and Russia. The current version of the QX56 has been on the market since 2004 and is at the end of its shelf life, with a new 2011 Infiniti QX56 debuting at the New York Motor Show this week.

Mercedes CL facelift (2010): first official photos

This is the newly facelifted Mercedes CL500; although previously tipped to be called the S-Class Coupé, Mercedes stuck with the original name after all. Alongside the soon-to-be industry-standard daytime running lights and updated grille, lights and exhaust, most of the changes on the new 2010 Merc CL are in areas you can't see. The biggest change is in the engine bay: out goes the old 5.5-litre V8 and in comes a more powerful and economical 4.7-litre bi-turbo.