The BMW i8, first introduced as the BMW Concept Vision Efficient Dynamics, is a plug-in hybrid sports car developed by BMW. The BMW i8 can go from 0–100 km/h (0 to 60 mph) in 4.4 seconds and has a top speed of 250 km/h (155 mph). The production i8 has a 7.1 kWh lithium-ion battery pack with a usable capacity of 5.2 kWh and intelligent energy management that delivers an all-electric range of 37 km (23 mi) under the NEDC cycle. In July 2012 the BMW i8 won the 2012 North American Concept Vehicle of the Year. The BMW i8 Spyder won the 2013 Best Production Preview Vehicle award.