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

2012 Mercedes-Benz SLS AMG Roadster video hits the Web

Last week we showed you fresh photos of the 2012 Mercedes-Benz SLS AMG Roadster. In this morning's edition of car porn, we give you a video of the two-door convertible that shows interior details and an action shot of the soft top dropping while the car moves along at 31 mph. That's all great but, with 563 hp under the hood, we just want to see this thing go fast.

Bertone Jaguar B99 GT concept (2011) at the Geneva motor show

Bertone B99 GT – the racing version Next to the fully-trimmed B99 show car on Bertone's stand is an exterior mock-up of a GT2-class racing B99.  Two additional electric motors up front mean the GT has 972bhp all wheel drive capability.  A carbonfibre splitter, diffuser and flat undertray are matched with a massive bootlid wing.  There's enormous side-exit exhausts for the range-extender generator, a 100mm lowering job and a lurid green paintjob.  It’s an extreme way for Bertone to highlight the dual images of luxury and performance that Jaguar has in its heritage – particularly since there aren’t currently any saloons in the FIA GT2 series.  Perhaps they should have painted it in a '70s Broadspeed XJC touring car livery to get the full effect. More details on the Bertone B99 exterior design Bertone claims that it has modernized classic Jaguar three-box saloon design with the B99, with Bertone’s design chief Mike Robinson and his team drawing inspiration not just from past Jaguars, but the stealthy big cat that lends its name and image to the brand.  They coined the slogan "Cunning Glamour with Race-Bred Innovation” to embody the B99’s design… but from the two cars on the stand it looks like reconciling those disparate aims in the one vehicle may have been a bit beyond them. The roofline has been shortened and lowered in proportion to a conventional three-box body, inspired by a Jaguar cat stalking its prey.

Video: Buick Invicta

General Motor's Buick brand is blossoming in China, so the automaker chose the largest Chinese Auto Show this year to unveil its latest concept: the Invicta. Unlike the Riviera concept shown in Shanghai last year, the Invicta is slated for production soon given the level of refinement we saw when we viewed the car in Beijing. And unlike some market-specific new cars unveiled at the show, the Invicta will make its way to other markets across the globe. Click on the image on the left to see a video of the development and the designers who worked on the Invicta concept car.