MCLAREN P1 LM IS THE WORLD'S MOST EXTREME, EXCLUSIVE SUPERCAR

As fast as it is, and as deep as its manufacturer's roots may run in motor racing, the McLaren P1 was designed from the get-go as a road-going supercar. The subsequent P1 GTR adapted it for use exclusively on the track, but now Lanzante has put it back on the road in the form of the new P1 LM.

For those unfamiliar, Lanzante is the outfit that campaigned the original McLaren F1 GTR to such great success at Le Mans back in 1995. Following the 28 examples of the F1 GTR, McLaren built another six examples of the F1 LM, kept one and sold the other five – each based on the GTR's specs but modified for road use. Now Lanzante has unearthed that playbook again with the release of the new McLaren P1 LM.

Among the steps Lanzante took in transforming the P1 GTR to road spec involved retuning the hybrid powertrain to keep the output at 986 horsepower while running on 99-octane pump gas and at higher temperatures. The automaker saved a good 130 pounds compared to the GTR by ditching the onboard air-jacking system, fitting polycarbonate windows, refabricating the exhaust and cat pipes out of lightweight Inconel and the bolts out of titanium. It even insulated the engine bay in gold leaf – just like the original F1.

Lanzante also fitted an exposed carbon-fiber roof, new rolling stock and steering wheel (replete with switchgear like a modern grand prix racer's). It trimmed the interior in Alcantara, and mounted a bigger front splitter and rear wing to increase downforce by 40 percent.

The result ought to make for one frighteningly extreme ride, likely to be capable of embarrassing just about anything else on the road or track. We'll try not to be too tempted, though, as Lanzante – mirroring the original – will only make six examples and sell five: one in dark gray (like the prototype pictured) and another four in orange.

Given the extensive modifications and the $2 million or so McLaren charged for the P1 GTR in the first place, we don't even want to know how much it would cost to put one in our driveway.