Mercedes has revealed the 2014 Mercedes S500 Plug-in Hybrid at a small press event, ahead of its public debut at the 2013 Frankfurt Motor Show in September. According to the Mercedes-Benz Passion Blog, the 2014 Mercedes-Benz S500 Plug-in Hybrid is powered by a V6 gasoline engine that develops 333 HP (245 kW) and 480 Nm […]