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In total, the concept vehicle, which might've revived the legendary American manufacturer, cost Roy a cool $1.5 million of his own money. After the unsuccessful attempt in selling the car and company together in 2007, Gullickson announced that the Twelve prototype would be offered without reserve at RM's July 26th auction event in Plymouth, Michigan.
Featuring an aluminum space-frame chassis and a 119-inch (3,023 millimeters) wheelbase, the Twelve was once described by its owner as being "every bit as good as a Mercedes or BMW." Under the long, streamlined hood, engineers fitted an 8.6-liter (525-cubic inch) Falconer Racing V12 tower of power, with port fuel injection from General Motors.
Despite its large size and apparent heaviness, the concept weighs just 1.7 tons (3,750 pounds) thanks to lightweight materials used for the chassis and the bodywork. Coupled with a 4L80E automatic gearbox, 440 horsepower was sent to all four wheels. The oomph was enough to propel the luxury limousine from 0 to 60 miles per hour in just 4.8 seconds.
Source: https://www.carscoops.com/2014/05/how-much-would-you-give-for-this-1999/
