The Porsche 918 Spyder is a plug-in hybrid with a 500-horsepower, 4.0-liter V8 engine and two electric motors capable of a combined 218 horsepower. Available at a price of $845,000, the 918 Spyder is projected to reach 60 mph in just 3.1 seconds. Top speed is said to be 199 mph, and Porsche says the 918’s pure-electric power will be able to hit 94 mph. Despite its explosive performance the Porsche 918 Spyder is claimed to use an average of 3.0 litres of fuel per 100km, or 23 per cent less than the Toyota Prius.