During Supercar Owners Circle in Spain I have filmed this ? 4 million Pagani Huayra BC Coupe and Roadster driving on the streets. Pagani first introduced the Huayra in February 2011 as the replacement for the marque's game-changing Zonda. The two biggest differences were the dropping of a manual transmission and the addition of two turbochargers to the AMG-sourced V-12 nestled behind the driver. Power went up, though some argue driver involvement went down. Then came the Huayra BC, so named for Pagani's first customer, the late Benny Caiola. Power was up from 730 hp and 738 lb-ft of torque to 791 hp and 775 lb-ft, and weight was down. Next came the Huayra Roadster, a removable-top version of the standard Huayra. It generated controversy because removing the roof meant changing the doors from gullwing to standard. The 2020 Pagani Huayra Roadster BC (alternatively known as the Huayra BC or just RBC) is simply a roof-off version of the "regular" BC then, right? If only it were that easy. The engine is the latest, newest, and most powerful version of AMG's legendary 6.0-liter twin-turbo V-12 that's still, almost stubbornly, paired with a seven-speed Xtrac automated manual single-clutch transmission. This engine is an actual preview of what will power the Huayra's replacement, the upcoming and soon to be renamed Pagani C10. AMG will continue producing this beast of an engine through 2025, which should give Horacio Pagani and sons plenty of time to stock up. Pagani doesn't need all that many V-12s, as the tiny brand builds just 45 cars per year; 500 M158 V-12s would be more than a decade's output. And Pagani capped Huayra Roadster BC production at 40 units?twice as many as the 20 BCs built?and each one sold before the RBC was announced officially. Beyond the engine, quite a bit separates the RBC from the plain old BC. The entire vehicle is built from a new type of carbotanium (Pagani-speak for carbon fiber woven together with titanium), which the company says is about 20 percent stiffer and nearly five times as expensive as typical carbon fiber. The car's body is adjusted slightly for RBC duty, with a new front fascia, massive wing, and more aggressive rear diffuser. Obviously, you lose some downforce when you lose your roof. Pagani says some of the new aero tweaks add up to 1,100 pounds of total downforce at 175 mph. The suspension's active dampers are reprogrammed for RBC duty, and there's an all-new titanium exhaust. Join my Notification Squad: click the Bell ? Make sure you like and comment the video, but also subscribe to the channel! *Michael - Automotive Mike* Socials: ?? https://www.facebook.com/AutomotiveMike ?? https://www.instagram.com/automotive_mike Join my Notification Squad: click the Bell ? Make sure you like and comment the video, but also subscribe to the channel! *Michael - Automotive Mike* Socials: ?? https://www.facebook.com/AutomotiveMike ?? https://www.instagram.com/automotive_mike