The platform will be shared with the next generation 7-Series, but will have a unique wheelbase, roof and hood height, and track. Inside, sharing will supposedly be restricted to things invisible to the driver. Engines will also be unique to Rolls-Royce, though developed from BMW engines such as the 407-hp twin-turbo V8 from the X6. And with Rolls in a brand new position in terms of volume, cachet and straight-up cash, the company is exploring something that would have been unthinkable not too long ago: a diesel. All that young money snapping up Phantoms means, in the words of a mole at Rolls, "the old-money buyers who might have been put off by the idea of a diesel engine are becoming a much less important part of our customer base."