The topless version of Pagani's Huayra BC is slightly heavier, but also more powerful and more aerodynamic than its roofed counterpart. The Huayra Roadster BC is powered by a bespoke Mercedes-AMG 6L twin-turbo V12 that produces up to 800hp and 774lb-ft of torque. It has a strong and light carbon composite monocoque with front and rear tubular steel subframes, and a redesigned body to maintain grip. Production is limited to 40 units, with each one going for $3.4M.