The Mercedes-Benz S 500 Plug-in Hybrid is More Frugal Than a smart
20 Aug 2013, 12:27 UTC · By: Alex Oagana / The previous, W221, generation of the Mercedes-Benz S-Class featured the world's first hybrid drive system with a lithium-ion battery in the form of the S 400 Hybrid. The new, W222, generation ...