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

Bentley designers talk 'Intelligent Details' in movie shot on iPhone

Bentley has released a short documentary featuring director of design, Luc Donckerwolke, and SangYup Lee, its new head of exterior design, taking a ride around New York City in the back of a pair of Mulsannes. Called 'Intelligent Details,' the film sees Donckerwolke and Lee talking about how one of the challenges of designing a successful Bentley interior is to match the car's performance with the expectation of its integrated technology. And to make sure you get the message loud and clear, not only does the video show the Mulsanne's optional smartly integrated iPads, which emerge from the front seat backs at the touch of a button, the whole movie itself was shot on an iPhone 5S (albeit 'enhanced' by some extremely expensive-looking lenses and rigs), then cut together on one of the car's in-built tablets.

Mazda pushes fuel economy, plans a new engine by 2011

Mazda's push to increase fuel economy across its model line will include a new range of gasoline engines and may involve the introduction of diesel and idle-stop technology in the United States. Mazda is aiming to increase fuel economy across its global lineup by 30 percent by 2015. The first stage of that transformation will include the introduction of a more fuel-efficient four-cylinder powertrain in 2011.

Lotus Exige S Roadster Official: Price (£52,800) and Specs

It’s the first properly good news from Lotus for a while, and looks a promising offering at the same price (£52,800) as the tin top Exige S and, remarkably for a convertible, actually weighing less than the hard top – although by only 10kg. The Exige S Roadster gets the same 3.5 litre V6 as the coupe which means 345bhp, 295lb/ft of torque and a 0-60mph of a very respectable 3.8 seconds, but it does lose the coupe’s rear wing and front splitter for better airflow. The folding roof on the Roadster is a manual affair, but Lotus say fresh air motoring is just ‘Two clicks and a roll away’, so the manual roof is probably the best – and lightest – option.