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

Audi Urban Concept

Audi has released additional photos and information on the Urban Concept, which is set to make its debut at the Frankfurt motor show in September. As we previously reported, the new car – touted by Audi as a 'new kind of concept car' that combines aspects of a racing car as well as a fun-to-drive urban vehicle – is a diminutive two-passenger vehicle powered by two e-tron electric motors. Measuring in at 3200mm long, 1700mm wide and 1200mm tall, the Urban Concept is expected to weigh less than 500kg, thanks largely to a cockpit made from CFRP.

Mercedes shows GLA45 AMG concept

Mercedes-AMG showed its take on a compact high-performance SUV at the 2013 Los Angeles Auto Show with the Concept GLA45 AMG. AMG says along with the distinctive design, power comes from the world’s most authoritative four-cylinder series production engine. That would be the AMG 2.0-liter turbocharged four, producing 355 hp and 332 lb-ft of torque.

Chevy Camaro Z/28 programmed with flying car logic

Most of the time when on a racetrack, or anywhere for that matter, you want to keep all four wheels on the ground. Sure, it's cool when a VW Golf gets a wheel up during an autocross event, still, it's less traction going to the ground for braking, accelerating or turning. But if you're really going for a hot lap, catching a little air is often par for the course.