
What is it? A plug-in hybrid that Porsche says is capable of lapping the “Nordschleife of Nürburgring in less than 7:30 minutes, faster than even the Porsche Carrera GT.” What’s more, Porsche says fuel economy should be somewhere around 78 miles per gallon. How does it do it? The 918 Spyder concept is powered by a 500-horsepower gasoline V-8 and electric motors on the front and rear axle (the two electric motors make a combined 160 kilowatts of power, or the equivalent of 218 horsepower). Total power output is 718 horsepower. Porsche is not saying whether the 918 Spyder concept will go...