Complex sentence: Since December 2006, the hotel has had a fleet of 14 long wheelbase Rolls-Royce Phantoms painted in the hotel's signature green, which was the largest order placed for Rolls-Royce in the history of the company.
Split into simpler sentences: Since December 2006, the hotel has had a fleet of 14 long wheelbase Rolls-Royce Phantoms painted in the hotel's signature green. Which was the largest order placed for Rolls-Royce in the history of the company.