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

Listen again to Autodesk's Creative Sketching with SketchBook Pro webinar

Autodesk SketchBook Pro is a powerful, easy-to-use digital sketching tool; a blank canvas with all the tools you might use in an analog marker rendering in one mess-free package. Autodesk SketchBook Pro can be used in any stage of the design process, allowing the designer to leverage the strengths of digital sketching. From napkin sketch to final presentation renderings, SketchBook is the toolkit that allows you to unleash your creativity.

Audi RS5 spotted at the Nurburgring

The Audi RS5 caught testing at the Nurburgring this week. The Audi S5 is a cracking looking car. Stylish and understated, it carries a big enough stick to provide oodles of fun for most, but a real barn-stormer of car, with plenty of power would, even in these constrained times, be a winner.

One Lap of the Web: Porsche at Le Mans, F-150 reclaims the flag and Foose talks classic rods

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- We covered the 24 Hours of Le Mans top to bottom including every make and class, but if your preferred marque is Porsche you might enjoy the Porsche Purist's look at how cars from Stuttgart fared during the endurance classic, complete with photos, stats and results.