We don't know a whole lot about the next generation Chevy Volt , other than the fact that it's expected as a 2016 model. It's safe to assume Chevrolet will continue with its formula of two powertrains, one driving the wheels using electricity drawn from a lithium-ion battery pack and one powered by gasoline that exists almost solely to keep that aforementioned battery pack charged up.Besides those basic bits and pieces, though, we have no idea what to expect when Chevy pulls the covers off its next-gen Volt. It's supposed to ride on a new platform, and it will almost assuredly have some improvements that will allow it to increase its electric-only range from its current 40-ish miles (which can vary greatly depending on driving styles and circumstances) to something between 50 and 60, and likely with greater efficiency.As you can see from our gallery of spy shots above, the 2016 Chevy Volt is indeed being tested by the automaker, right out in the eye of the public. Comparing the new Volt with the old (below), we're pretty sure that the bodywork is completely new, and even if the overall shape is very familiar, it appears to be sleeker than before. If you look closely, you'll see the tell-tale plug-in port, the Volt badging and what appear to be safety shut-down switches on the bodyside and rear end of this test prototype. Oh, and don't miss the plug hanging limply from the front fascia.Have a look at the 2016 Chevy Volt prototype above, and let us know what you think in Comments.