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

Porsche plans four-door Panamera convertible

A series of European and U.S. patent applications obtained by AutoWeek show that Porsche remains committed to building a four-door convertible version of its flagship Panamera, despite recent comments from Zuffenhausen insiders indicating the car had been canceled. The new car, depicted in official drawings that accompany the latest Porsche patent applications filed in February, eschews the two-door route taken by all of its upmarket rivals for a four-door body.

Tesla Roadster 2.5 breaks cover

Perhaps feeling a bit of chutzpah after a wildly successful stock offering this week, Tesla is demonstrating on Thursday that it still has an eye toward product, revealing the updated Tesla Roadster. And it's available for order now. Called the Roadster 2.5, the car features minor enhancements, including a new front fascia with different diffuser vents (the change is actually apparent) and new rear diffuser.

Nissan 370Z Roadster hits UK

The Nissan 370Z Roadster finally hits the UK It’s been nine months since Nissan launched the 370X Roadster from a tent in New York and, despite the promise that the 370Z Roadster would hit UK shores in September last year, it still hasn’t. But it’s close as Nissan have finally announced that orders for the 370Z Roadster are now being taken and the first UK cars will arrive in March. Only a year after the launch.