Watch Top Gear Try And Powerslide The 903-Horsepower McLaren P1Raphael Orlove10/11/13 4:41pmFiled to: McLaren P1Top GearSpaDrifting1207EditPromoteShare to KinjaToggle Conversation toolsGo to permalink Rear wheel drive. 903 horsepower. The McLaren P1 should be easy to powerslide, right? Maybe not so much, as Top Gear demonstrates here.Jeremy Clarkson and his camera crew are at the Spa circuit in Belgium to test the $1.3 million hybrid. He likes the car. He likes it a lot.