The McLaren P1 LM. Lanzante’s ultimate version, of the track version, of Mclaren’s Ultimate Series car. Does it get much better, faster or more extreme? You’d be hard-pressed to find something else with number plates and road tax that matches it. How best to prove that point? Whack McLaren test driver and racing legend Kenny Bräck behind the wheel, send him up the Goodwood Hillclimb at the 2016 Festival of Speed and set the clock ticking.