The BMW i8 Concept Spyder two-seated, open-top sports car  is one big powered by the same plug-in hybrid system found on the coupe version: a 131 HP electric motor on the front axle he got a 223 HP turbocharged three-cylinder petrol engine on the rear wheels. With a total force of 354 HP, the new concept will sprint from 0 to 60 mph in 5 seconds and can hit very easy a top speed of 155 mph. While running on electric only, the car has an autonomy of 19 miles, while the petrol engine delivers an impressive fuel economy of 94 mpg. The electric motor is powered by a lithium-ion battery which can be fully charged from a domestic power socket in less than two hours.