Porsche Panamera S Hybrid next year?

German luxury automaker Porsche is planning to unveil the plug-in version of the Panamera S Hybrid next year. Porsche said the plug-in Panamera is equipped with a mains charger and the small nickel-metal hydride battery is replaced by a bigger lithium-ion unit.It will join the range – including the Panamera, Panamera S, Turbo, Turbo S, GTS, Diesel, and Panamera S Hybrid – in mid 2013. The