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

BMW i8 revealed: The BMW Vision ED lives

BMW i8 Revealed Today BMW reveals the i8 Concept, the production concept of the Vision EfficientDynamics supercar we saw back in 2009 and, for BMW, their way forward in a more eco-conscious world. But being aware of the climate doesn’t mean the joy has to be taken from the drive, and the BMW i8 aims to offer a car which can claim a green halo be also be a stimulating and appealing car for the petrolhead. The i8 is remarkably similar to the original Vision ED Concept, although it has dumped the 1.5 litre diesel the Concept has for a new 1.5 litre petrol engine with direct injection which develops 220bhp and 221lb/ft of torque.

Opel/Vauxhall Cascada [w/gallery]

The Opel/Vauxhall Cascada effectively replaces the Astra Twin Top, but attempts to move the model upmarket as a separate product line. It has moved up a size to reflect its prestige aspirations: at 4,697 mm long and 1,840 mm wide, it's longer than an Audi A5. Like many of the latest generation of convertibles, the Cascada ditches a folding solid hardtop in favor of a lighter, more space-efficient and cheaper soft fabric set-up.

Economic downturn might hit plans for Porsche small roadster

Porsche's decision on whether to build an entry-level roadster will depend on the global economy, CEO Matthias Mueller said. Mueller said that if the automaker decides to go ahead with the car, sales would begin at the earliest in the third quarter of 2014, but probably later. A decision on production will depend on how the global economic situation pans out, particularly in relation to the auto industry, Mueller said.