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

Day one of the Porsche Rennsport Reunion IV at Laguna Seca

The world's greatest gathering of Porsche race cars took to Mazda Raceway at Laguna Seca on Friday, Oct. 14 for practice as Rennsport IV got under way. The Rennsport Reunion is an every-three-year event that brings vintage Porsche race cars and drivers together to compete in various classes.

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.

Land Rover confirms end of Defender production

It's been all but a foregone conclusion for some time now, but Land Rover has confirmed to our sister publication Automotive News Europe that the aging Defender won't live to see 2020. Originally conceived as an agricultural machine, the first Land Rover prototype used scavenged Willys Jeep bits left over from World War II. American kids of a certain age may have been captivated by the Land Rover's mystique while watching Mutual of Omaha's Wild Kingdom back in the '70s.