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

HBH tunes an Aston Martin V12 Vantage into the Bulldog GT

We love one-off specials here at Autoweek almost as much as we love the supercars upon which they're based. And if you're a tuner trying to pick a good chassis, we can't think of a much better place to start than the Aston Martin V12 Vantage. That's what Danish company HBH did for its Bulldog GT.

Mercedes-Benz Business-Limousine by BINZ offers stealth and value

While the Mercedes-Benz S-class XL, the Maybach 62 replacement rumored to use the name Pullman, is still a few months and a couple hundred thousand dollars away, there are other options out there for getting work done on the road to the office. While Brabus wowed crowds at the Frankfurt motor show just a couple months ago with its mental Biturbo iBusiness sedan based on the newest S-class, at the end of the day we weren't sure if that was a car for the rear-seat passenger or the driver. German coachbuilder BINZ GmbH has made a name for itself over the last few decades building Mercedes-Benz-based ambulances and unbelievably cool security cars based on the G-class, and the company also happens to offer a number of options when it comes to limousines.

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.