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

Concept Car of the Week: Mazda RX500 (1970)

Developed by the Toyo Kogyo Company's advanced design and engineering team, the Mazda RX-500 was described as a ‘mobile test bed for high-speed safety'. Looking at its design, the team's childlike enthusiasm has shone through, resulting in a very cool concept.  From the rakish front to the wraparound windscreen and on to the bread van rear, everything communicates high-tech and ‘70's futurism while also channeling a little of the Star Wars X-Wing. Thanks to plastic body panels, the concept weighs only 850kg and is powered by a 491cc rotary engine delivering 247bhp fitted behind the cabin, in front of the rear axle.

Bloodhound 1000mph World Speed Record attempt goes carbon neutral. Piffle.

Richard Noble’s Bloodhound Land Speed Record attempt will now be carbon neutral thanks to sponsorship by Carbon Neutral Investments (CNI). People like Richard Noble – leader of the Bloodhound Project aiming to break the 1000mph land speed record – are made of the same stuff as Spitfire pilots and Biggles, with a gung-ho approach to the inherent dangers and an inability to contemplate failure; British Bulldog Spirit at its best. So it seems almost sad that a proper Boy’s Own adventure like the Bloodhound SSC – a 133,000bhp rocket and jet powered racing car – should bow to trendy PC sensibilities by announcing it’s a ‘Carbon Neutral’ project.

Final 16 contestants in U.S. GT Academy to compete at Silverstone in June

The remaining 16 contestants in the U.S. GT Academy will head to England's Silverstone circuit for a weeklong boot camp in June, Sony Computer Entertainment America and Nissan North America said Wednesday. The GT Academy began with 53,000 registrants who competed for the opportunity to race for Nissan in an undisclosed event.