 | MSO, in McLaren-speak, stands for McLaren Special Operations, and the HS, for sure, is special. It’s so special that you can't have one of the 25 units as they are sold out. The HS has a full carbon-fiber body kit, a carbon-fiber hood and roof, and lightweight glass for the windows. Its carbon-fiber rear wing, similar to the McLaren P1 GTR, makes for a total downforce of 484 pounds at 150 mph, can be electronically adjusted for either track or street settings, and also functions as an air brake. |
 | The 3.8-liter, twin-turbocharged V-8 engine, shared across the McLaren range, is slightly more powerful than it is in the standard 650S, making 679 horsepower and 516 lb-ft of torque. |
 | The MSO HS comes with McLaren Track Telemetry. The feature includes a host of sensors and three cameras to provide data to help the driver go even quicker. MSO will customize each of the supercars to an owner's specifications. Pricing hasn't been released. |  Given its extremely limited run, one might safely assume the MSO HS's price will dwarf the $350,000 of the 675LT. |