815 horsepower at the rear wheels in typical British weather. Last weekend the Goodwood Festival of Speed took place and people could enjoy dozens of exclusive cars that were sent up the Goodwood Hill. The rain sometimes came pouring down from the sky and then we just drove. Also with the millions costing McLaren Elva without a roof. In the next video we see that the Elva is not a car that you just get into and drive off in the rain. It takes serious helmsmanship!