The word “expansion” is being thrown around loosely in the auto industry these days as more and more automakers are pushing to beef up their model lineups. Aston Martin is doing it. McLaren is doing it. And apparently, so is Mercedes-Benz. Autocar is reporting that the German automaker is once again looking to add more new models to its lineup in 2017 and, if the report is true, we could see at least nine new vehicles with Silver Arrow badges hitting dealerships in the next calendar year.