You missed your chance to buy one of the 100 units of the Huayra Roadster over the course of 2017. They were all sold for US$2.4 million a pop. The Roadster is lighter than the coupe and shares the AMG-produced, twin-turbo 6.0L V12 (764 horsepower in the Roadster, 750 in the coupe). Horacio Pagani's company builds its cars by hand, using only the finest parts, like titanium nuts and bolts that cost US$100 each. Just the ignition key itself is said to be worth USD$3,700.