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13-479: The Lamborghini Estoque ( Spanish pronunciation: [esˈtoke] ) is a one-off concept car built by Italian automobile manufacturer Lamborghini . Unlike Lamborghini models as of 2008, which were mid-engine, two-seater sports cars, the Estoque is a four-door sedan . The Estoque was introduced at the 2008 Paris Motor Show . The Estoque is the first front-engine vehicle to be introduced by Lamborghini since

26-700: A possible limited production of an exclusive Cadillac halo model, such as the Sixteen, to be the "ultimate flagship" of the brand and sit atop of the upcoming flagship, as previewed by the Ciel concept of late 2011. An exclusive Cadillac halo model descended from the Sixteen concept lineage was finally confirmed in March 2020 with the Cadillac Celestiq , an ultra luxury, 4 door electric flagship sedan which began production in 2024. In 2003, Top Gear reviewed

39-422: A working drivetrain and accessories. The state of most concept cars lies somewhere in between and does not represent the final product. A very small proportion of concept cars are functional to any useful extent, and some cannot move safely at speeds above 10 miles per hour (16 km/h). Inoperative " mock-ups " are usually made of wax, clay, metal, fiberglass, plastic, or a combination thereof. If drivable,

52-542: The Cadillac logo carved out of solid crystal on the steering wheel and a Bulgari clock on the dashboard. Although the Sixteen remained a concept car, its design language was implemented in Cadillac's subsequent vehicles, most noticeably on the 2008 Cadillac CTS . Since its unveiling there have been resurfacing rumors about a possible very limited production of an exclusive Cadillac halo model . A scaled-down version of

65-565: The LM002 utility vehicle. It was described as a "concept for a $ 230,000 four-door sedan". It had a 5.2 litre V10 engine shared with the Gallardo , although there had been speculation that this would be replaced by a V12, V8, or possibly even a hybrid or a turbo-diesel engine, as suggested by the then Lamborghini Brand Director, Manfred Fitzgerald. As with majority of the Lamborghini models,

78-420: The Estoque and that it was only a concept vehicle. Concept car A concept car (also known as a concept vehicle or show vehicle ) is a car made to showcase new styling or new technology. Concept cars are often exhibited at motor shows to gauge customer reaction to new and radical designs which may or may not be produced . General Motors designer Harley Earl is generally credited with inventing

91-472: The Estoque derives its name from the sport and tradition of bullfighting : An estoque is a type of sword traditionally used by matadors . It was reported on 22 March 2009 that production plans for the Lamborghini Estoque were cancelled. Lamborghini executives responded to this by stating that the Estoque had not reached the production planning stage and that the decision whether to produce

104-580: The Estoque or not has been delayed due to sales and marketing considerations. Stephan Winkelmann , the Lamborghini chairman, has since indicated that a four-door Lamborghini is likely, stating that response to the Estoque showed opportunities for Lamborghini outside the sports car market. The release of the Lamborghini Urus in 2018 indicates that the 4-door market is one in which Lamborghini is interested in competing. However, Winkelmann also stated that Lamborghini does not have any plans to manufacture

117-583: The car, referred to as the ULS (Ultra Luxury Sedan) or XLS, with a standard V8 and an optional V12 (the latter was to be called the Cadillac Twelve), had been rumored for production since 2005, but was eventually shelved in favor of the Cadillac XTS . Ever since the Sixteen was first unveiled there have been resurfacing rumors, speculation and high hopes of automotive journalists and aficionados about

130-957: The concept car, and did much to popularize it through its traveling Motorama shows of the 1950s. Concept cars never go into production directly. In modern times, all would have to undergo many changes before the design is finalized for the sake of practicality, safety , regulatory compliance , and cost. A "production-intent" prototype , as opposed to a concept vehicle, serves this purpose. Concept cars are often radical in engine or design . Some use non-traditional, exotic, or expensive materials, ranging from paper to carbon fiber to refined alloys . Others have unique layouts , such as gullwing doors , three or five (or more) wheels , or special abilities not usually found on cars. Because of these often impractical or unprofitable leanings, many concept cars never get past scale models or even drawings in computer design . Other more traditional concepts can be developed into fully drivable (operational) vehicles with

143-401: The drivetrain is often borrowed from a production vehicle from the same company or may have defects and imperfections in design. They can also be quite refined, such as General Motors ' Cadillac Sixteen concept. Cadillac Sixteen The vehicle is equipped with a Cadillac proprietary-developed aluminum 32-valve V16 engine displacing 13.6 liters (829 cu. in; 13,584 cc), which

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156-520: Was exclusive to the Sixteen and based on the GM Generation IV LS architecture. It is mated to a four-speed, electronically controlled, automatic transmission driving the rear wheels. The engine features fuel-saving Active Fuel Management "Displacement on Demand" technology, which could shut down either twelve or eight of the cylinders when the full output was not needed. The V16 was capable of 16.65 mpg under normal conditions. The engine

169-620: Was said to produce a minimum of 1,000 bhp (746 kW; 1,014 PS) and at least 1,000 lb⋅ft (1,356 N⋅m) of torque using no form of forced induction . The car itself weighs about 5,005 lb (2,270 kg). The car referenced the Cadillac V-16 of the 1930s. The actual design of the car was a combination of Cadillac's current "Art and Science" design theme and 1967 Cadillac Eldorado cues. Additional original design elements were provided by an in-house design competition led by GM Vice President Bob Lutz . The Sixteen has

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