LIVE: McLaren unveils wild one-off X-1 Concept

The MP4-12C-based X-1 Concept took 2.5 years to build and features a completely bespoke exterior.

You'd never know it from the exterior, but the supercar pictured above is actually a McLaren MP4-12C underneath its sinister sheetmetal.

Known as the X-1 Concept, it's a one-off, special-build project created by McLaren's Special Operations division for an "anonymous enthusiast."

"˜One of our clients who already owned a McLaren F1, a Mercedes-Benz SLR McLaren and now a 12C, wanted a unique car,' said Special Operations chief Paul MacKenzie. "˜The conversation began with our Executive Chairman Ron Dennis almost three years ago âˆ' before the 12C was even launched. The client wanted a machine that had all the capability of the 12C but wrapped in a unique body that reflected his needs and personality.'

Stylistic inspirations for the X-1 were diverse and not limited to the automotive world, ranging from the 1953 Chrysler D'Elegance Ghia to the Guggenheim museums in New York and Bilbao to - we're not making this up - an eggplant.

As the X-1's design is completely unique from the MP4-12C, the Special Operations crew had to craft bespoke exterior components from scratch - everything from the carbon-fiber body panels to the head- and tail-lights were built specially for the car. Because the customer wanted the X1 to be a fully-functional road car, it underwent a full battery of aerodynamic tests, 625 miles of track and road testing, and also the complete government homologation process. In all, the X-1 took a full two and a half years to complete.

Following its lengthy and complex gestation process, the X-1 is on display today at The Quail in Monterey, California, after which it will disappear into the collection of its eccentric owner.

Official Images