We like McLaren for many things. The brand?s relentless ambition to do better and its remorseless model development program top the list, and these virtues look set to be combined soon: The U.K.?s Autocar reports that the company has advanced plans to build another of its Ultimate Series cars. Currently known just by its internal design code of P15, according to Autocar, this will be a range-topping halo car in the manner of the erstwhile P1, and although it will have less power than its hybrid forebear, it is set to become the fastest ever street-legal McLaren.

Autocar has allowed us to share its renderings of what it thinks the production version will look like. While these are obviously speculative, we?re told that details have come from well-placed sources within Woking, and Autocar previously broke the story of McLaren?s plans to build a new three-seat Ultimate Series car, a project the company has since confirmed it is working on under the name BP23. Yet it looks like the production version of the P15 actually will arrive first. The report says customers are expecting to see it later this year, with deliveries beginning early in 2019, before BP23 arrives. Production apparently will be limited to 500 cars, and the price will be just shy of a million bucks at the current exchange rate.
The target is to make a car that is quicker around a track than the P1. Power will come from a reworked version of McLaren?s twin-turbocharged V-8 making close to 800 horsepower. Tha...