Mercedes' plans for a B-Class E-Cell Plus plug-in hybrid might headed for a change of direction. Take this all with a spoonful of NaCl, but looks like an all-electric powertrain made by none other than Tesla will be installed in the EV. As Autoblog Green notes, an anonymous spokesperson has reportedly claimed that the system switch-up is being made due to economics -- higher rebates and incentives are possible for zero-emission vehicles in the EV's US target market. No technical details were given on the new powertrain, but the ori
