The ReCharge concept is a plug-in hybrid electric version of C30, developed by Volvo's California development center. It was unveiled at the 2007 Frankfurt Motor Show. It features a 4-cylinder 1.6L flex-fuel engine and an electric motor on each wheel. It has an estimated battery range of 100 kilometres (62 mi). The batteries have 3 hours of full recharge time. The car has a top speed of 160 km/h (99 mph). Volvo plans to sell a production plug-in hybrid C30 in Europe in 2012.