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

Rennsport Reunion video: Porsche chases Porsche at Laguna Seca

The Rennsport Reunion is the world's largest gathering of Porsche race cars, and this year it touched down at Mazda Raceway Laguna Seca in California. We've seen the family portrait of Porsche race cars and we've seen historic race cars laying rubber at the famed track. But if you thought Porsche's new crop of sheetmetal was absent, you'd be wrong.

Stunning pictures of classic cars in Paris

The classic car market is booming and there have been not one, but two, auctions of beautiful historic cars in Paris in the past week alone. We've already reported on the inaugural RM Auctions Paris sale, which saw nearly £15 million's worth of the world’s rarest and most exotic cars going under the hammer, including a Jaguar D-type that sold for more than £3 million. The other was the annual Bonhams Les Grand Marques du Monde au Grand Palais car auction.

918 Alert! Porsche's stinging spyder grows closer to becoming reality

The first fully road-going prototype of Porsche's upcoming 202-mph hybrid-powered 918 Spyder has been seen during shakedown runs at the company's R&D center in Germany. Porsche released its own lightly disguised photographs of the cars being tested. The mules are “camouflaged” in livery meant to summon the famous 917 racer.