Is Cullinan, Rolls-Royce's first SUV, on track to become the best 4x4 in the world?

Rolls-Royce has confirmed that its first sports utility vehicle will inherit the internal code name given to the project - Cullinan.

The Cullinan, a vast high-sided ultra-luxury off-roader based loosely on the Phantom, is expected to arrive later in the year. The new Rolls-Royce SUV will probably have a V12 resembling the one in the Phantom, which we reviewed in December, as well as a powerful four-wheel-drive system. 

We obviously don't have any performance specifications yet, but Rollers are rarely slow, and a key ultra-luxury benchmark is the Bentley Bentayga 4x4 – so expect a 0-62mph time of under 5 seconds, and a top speed of at least 155mph.