Rolls-Royce has unveiled the world's most expensive car. Its Boat Tail is an open-air and nautical-themed luxury car inspired by J-class <a href="https://www.thenationalnews.com/uae/super-yachts-make-waves-at-dubai-international-boat-show-1.830693">yachts</a>. It took four years to create from formulation to build and is reported to have an estimated price tag of between $25 million and $28m, which would make it the most expensive car in the world. Rolls-Royce has only built three Boat Tails and the coachbuilt vehicles come with features such as a removable canopy roof. For those looking to enjoy a day out, the vehicle's rear deck also opens to reveal a "hosting suite", complete with utensils, glasses and a double fridge. The other side has an area for snacks. The cars are adorned with timepieces from <a href="https://www.thenationalnews.com/lifestyle/luxury/priceless-record-breaking-watch-covered-in-50-carats-of-diamonds-1.842230">Swiss luxury watchmakers Bovet</a>, which can either be worn by the owner or mounted on the dashboard.<br/> The Boat Tail is 5.8 metres long and appears elongated because of its stainless steel pinstripe inlays. Wood finishes in the lower cabin and floor resemble the hull of a ship. In terms of power, the vehicle is based on the same platform as the Rolls-Royce <a href="https://www.thenationalnews.com/lifestyle/motoring/the-new-rolls-royce-phantom-is-the-eighth-wonder-of-the-world-1.668707">Phantom</a>, which has a 6.75-litre, 563-horsepower twin-turbo V12 engine. "Rolls-Royce believes in complete authenticity and the Boat Tail is the culmination of a four-year collaboration with three of our most special clients," said Torsten Muller-Otvos, chief executive at <a href="https://www.thenationalnews.com/lifestyle/motoring/rolls-royce-ghost-arrives-in-the-uae-1.1089677">Rolls-Royce</a>. “Rolls-Royce Coachbuild clients are intimately and personally involved at each step of the creative and engineering process. "We work in harmony with the client to gain complete fluency in the nuances of their character and personality. We carefully translate these qualities into the elements with which they wish to imbue their commission. “This is authentic luxury. This is contemporary patronage in its truest form.”