At the Goodwood Festival of Speed, I thought I was ready for anything, until I saw the Lanzante-built McLaren P1 HDK LM-25.

Based on the already wild P1 hypercar, the GTR sports 3.15-inch wider front track, 19-inch center-lock racing wheels with Pirelli slick tires, and a front splitter and other aerodynamic add-ons ...

McLaren says the P1 GTR has one goal: "to be the best driver's car in the world on track." And with no intentions of making the thing road-legal, McLaren was able to freely put together this ...

The track-dedicated 986-horsepower McLaren P1 GTR will debut at the Geneva Motor Show in limited production form, with only minor modifications to the Design Concept presented just six months ago.

Among the many things we were looking forward to seeing at Pebble Beach this year, the McLaren P1 GTR was near the top of our list. Invoking the spirit of the legendary McLaren F1 GTR that ...

A post-race P1 GTR, bearing all the signs of having recently come off the track The collection will drop at 9:00 am ET on May 11, but only for McLaren owners and other specially-invited individuals.