Hi, Fusion Energi owners, I have a dirty VW Passat TDI that VW is buying back next month. I'll be getting about $21,000 cash. I'm looking for your advice about possibly buying a used Fusion Energi. It looks like I could buy a certified 2013 for well under that, and a certified 2014 at about that price range. Or, I could add a little of my cash and get a 2015. Where's the sweet spot? Are there significant improvements from 2013 to 2015? Is battery life still good for 2013 models? Anything I should stay away from and anything I should run to? I've seen some dead vehicle posts, but I'm guessing those are few and far between? Or, would you suggest a difference make/model that is similar to what the Energi offers? Appreciate any and all suggestions. Thanks!