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

Vehicle emissions are down and fuel economy is up, EPA reports

The Environmental Protection Agency released its emissions and fuel-economy report for 2010. Adjusted emissions are down across the board, at 395 grams of carbon dioxide per mile. That's a record low for the post-1975 database.

Tesla asks NHTSA to investigate fires

In response to concerns following a recent accident which appeared to result from road debris damaging the underside of a battery compartment of a Tesla Model S, causing a fire in the engine compartment, the company has announced that it has requested that the National Highway Traffic Safety Administration conduct a full investigation into the fire incidents. In a blog post, Tesla CEO Elon Musk wrote the following about the investigation: "While we think it is highly unlikely, if something is discovered that would result in a material improvement in occupant fire safety, we will immediately apply that change to new cars and offer it as a free retrofit to all existing cars. Given that the incidence of fires in the Model S is far lower than combustion cars and that there have been no resulting injuries, this did not at first seem like a good use of NHTSA's time compared to the hundreds of gasoline fire deaths per year that warrant their attention." Tesla has also released a software update to the cars which will maintain their standard ride height at highway speeds, preventing the air suspension from lowering the car an extra inch at highway speeds for greater aerodynamic efficiency.

Aston Martin V12 Vantage S Roadster arrives with 565bhp – the quickest Aston Roadster ever

The new Aston Martin V12 Vantage S Roadster arrives The Aston Martin V12 Vantage S – revealed in 2013 – has lost its roof and turned in to the quickest open-top car Aston Martin has ever produced. The Aston Martin V12 Vantage S Roadster gets the same 5.9 litre V12 as the tin-top model, which means a 0-60mph of 3.9 seconds (0-62mph 4.1s) and a top speed of 201mph, both figures just below the coupe but enough to make this the fastest production Aston Roadster ever. The V12 engine also offers delicious lumps of torque, with 457lb/ft – and most of that available almost from tickover – all delivered to the back wheels through the Graziano 7-speed automated manual ‘box.