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New high-performance BMW X5 M50d diesel in pictures

BMW has released pictures and details of the new X5 M50d, a 381hp super-diesel SUV with the world’s most powerful straight-six diesel engine. It will join the new, third-generation X5 range, which is set to go on sale in the UK this November with prices starting at £42,590. The engine carries over from the previous X5 M50d, but the 2013 version is both quicker and more fuel-efficient.

Porsche Cayman Black Edition revealed

Porsche has revealed its latest limited-run sports car: the Cayman S Black Edition. Created as a send-off for the current Cayman lineup, which is set to be replaced within the next 12 months, the coupe is planned to go on sale in July with a more powerful engine, a larger wheel-and-tire package and greater standard-equipment levels than those of the existing Cayman S. Taking a page from Henry Ford, the Cayman S Black Edition is available in any color you like--as long as it's black Inside, the Porsche gets black trims, black sport seats, a sport steering wheel, darkened instrument graphics, stainless-steel scuff plates with “Black Edition” inscriptions and a commemorative badge identifying it as one of a limited build of 500 units.

Jaguar XK and XKR special editions on sale

Jaguar has introduced special-edition models of the XK and the XKR, but they're not coming to North America. We're not sure why--sales of the XK and the XKR have been strong in the United States the past few months. Jaguar says the special-edition models feature enhanced interiors more than anything else.