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2015 Aston Martin V12 Vantage S Roadster

Aston Martin previewed its most powerful, quickest-accelerating and fastest production roadster ever at this year's Pebble Beach Concours. The 2015 V12 Vantage S Roadster is essentially a convertible version of the V12 Vantage S Coupe, which we reviewed last year, a model that drops the automaker's most potent powertrain into its smallest chassis. Unlike the outgoing V12 Vantage Roadster, this new S model boasts a more powerful engine, a new transmission, new adaptive suspension and more luxurious appointments along with freshened styling. While last year's beloved six-speed manual gearbox is gone – a thought that continues to bring tears to our eyes – everything else about the updated roadster piques our interest. We recently spent a full day in the mountains and deserts surrounding Palm Springs with a China Grey (with red carbon fiber accents) version of the British automaker's latest. Driving Notes Mirroring its coupe sibling, the Vantage S Roadster features an all-aluminum monocoque platform with lightweight aluminum body panels. To replace stiffness lost when the roof was removed, a rigid cross member has been added to the open platform. The Roadster's power-operated soft top is fully automatic in operation, opening and closing in about 20 seconds at speeds upwards of 30 miles per hour with the touch of a switch. When tucked away, the entire assembly is hidden cleanly beneath an integrated hard tonneau cover. So as not to be mistaken for its predecessor, Aston Martin has upgraded the model's signature grille from aluminum to carbon fiber with black or titanium silver mesh, with or without body-color accents. The lightweight, forged aluminum, 10-spoke alloys are also new, as is the obvious scripted red "S" on the trunklid. Inside, occupants will find additional grippy Alcantara on the seats and new patterns in the stitching. There are also a slew of upscale options and access to Aston Martin's bespoke Q treatment available. Aston's famed, naturally aspirated, 6.0-liter V12 has been upgraded with a larger throttle body, dual variable valve timing, a revised intake manifold, an improved fuel pump and fully machined combustion chambers. Combined, the improvements are enough to warrant a new AM28 engine designation. On a dyno, the engine cranks out 565 horsepower and 457 pound-feet of torque.

Rare 1958 Aston to be auctioned in Tennessee

Decaying Aston Martins are showing up on the auction block all over the world. The final, original DBS recently went up for bid in the UK, and to go up for sale on the other side of the Atlantic, a 1958 DB Mark III was recently found wasting away in a Tennessee garage. "I didn't know much about it, except it was old and worth some money," said owner Tammy Maxwell to Clarksville Now. Her husband bought the Aston in Hawaii in 1975 and carried the car along with him until the family settled in Tennessee. He originally intended to restore it but an illness got in the way. Now, the vintage coupe is crossing the auction block in Cumberland Furnace, TN, on April 11 through Auction World Gallery. This example is in very rough shape, though. The paint and trim are gone from the entire front end, and the interior is a rat's nest of parts. There's no mention of whether the powertrain is intact, although a crankshaft is visible sitting in the boot and possibly a carb on the passenger seat. It's going to be a big project to get this Mark III back on the road. According to Aston Martin, the company built just 552 examples of the DB Mark III, and 462 of them were the coupe body style shown here that featured a hatchback. Power came from a 2.9-liter inline-six routed through a four-speed manual gearbox. The car also grabbed a unique footnote in pop culture history as James Bond's car in the book Goldfinger, rather than the DB5 in the film version.

800-hp Aston Martin Vulcan will live long and prosper... on the track

The Aston Martin Vulcan might by one of the most beautiful creations to ever emerge from the British sports car company. Unfortunately, its status as a track-only toy limited to 24 units makes seeing one on the road practically impossible. That's a shame, too, because nothing would wake up an early morning commute better than seeing jets of flame shoot out of the side of this coupe. For the Vulcan, Aston Martin takes a 7.0-liter version of its tried and true V12 and promises to extract over 800 horsepower from it. The engine is hooked up to a six-speed sequential gearbox, and the car features all of the other necessities for a full-bore track car too. The pushrod suspension, anti-lock carbon-ceramic brakes and traction control are all fully adjustable to create the perfect balance for any circuit. Underneath, there's a carbon fiber monocoque, and the body panels are also made from the lightweight material. While the mechanicals are everything a driver could want on the track, the design is just as attractive. The styling takes the taut lines from Aston Martins of the last decade and sharpens everything to look futuristic. The pointed, orange filaments making up the taillights are an especially cool touch. The brand promises to reinterpret this look for future models, so we might still see inspiration of it on the road. Give it a thorough look in our live gallery above from the floor at the 2015 Geneva Motor Show. Related Video: