What we do know for sure is that Rolls-Royce has committed itself to launching an uber luxurious SUV sometime in 2017. BMW Sales and Marketing boss, Ian Robertson, who was previously Rolls-Royce Chairman, revealed that the SUV is currently codenamed Cullinan. What the heck is that? Good question. Cullinan is supposedly the name of the world’s largest uncut diamond that was found in South Africa back in 1905.