Rolls Royce Cullinan. Overview. Soon to be seen pulling up to red carpets everywhere is Rolls Royce’s very first SUV, named after the largest diamond ever found. Sporting rear hinged suicide doors and an opulent cabin, the Cullinan commands a starting price around $,and for good reason..If you’re seeking the ultimate in prestige, the Rolls Royce Cullinan is the top choice. The $, starting price certainly weeds out the of the population, and it’s more likely the .