Nico Rosberg has been enjoying his racing retirement since winning the 2016 Formula One World Championship and recently jumped behind the wheel of a McLaren P1 with another champion sitting next to him.

The owner of this P1 is none other than Mika Häkkinen and interestingly, it’s one of a handful of P1 experimental prototypes that were converted into production cars and sold to customers, so one could say it’s therefore even rarer than a “typical” P1.

As you probably know, the P1 is powered by a 3.8-liter twin-turbo V8 engine mated to an electric motor. All up, it delivers 903 HP to the rear wheels, making it a bit of a handful on the tight city streets of Monaco.

To get the best out of the hybrid hypercar, the duo headed up to the spectacular mountain rods above the tiny principality. Despite this being the first time Rosberg had driven a P1, he was able to quickly extract its full performance and even scared Häkkinen a little bit.

Introduced in 2013, the P1 was the pinnacle of the British brand’s range and its first hybrid model. It directly rivalled the Ferrari LaFerrari and Porsche 918 Spyder and later spawned the track-only GTR.

McLaren has confirmed that it will create a successor to the P1, but has yet to specify when we might expect such a model. We guess it won’t be that soon, as Woking has just launched the Senna and is already teasing the BP23 three-seater that will serve as the spiritual successor to the iconic F1.