Rolls-Royce La Rose Noire Droptail | World’s Most Expensive Car | ₹270 Crores | $30 Million. The most expensive car in the world is the Rolls-Royce La Rose Noire Droptail. Rolls-Royce La Rose Noire Droptail | ₹250 Crores. The La Rose Noire is a unique Droptail custom roadster that is hailed as the costliest car in the world. The La Rose Noire is believed to be inspired by the 1912 Rolls-Royce Silver Ghost ‘Sluggard’ and Black Baccara rose.Rolls-Royce La Rose Noire Droptail | World’s Most Expensive Car | ₹270 Crores | $30 Million. The most expensive car in the world is the Rolls-Royce La Rose Noire Droptail.