Thinking seriously of getting the Chevy Bolt. The dealers here are pretty clueless with respect to these cars, so this forum has been helpful. One dealer emailed me this morning saying that they were offering $4000 discounts to unload the remaining 2017 Bolts that they have in inventory. From what I read, there was not a significant change between the model years. Should I jump on the 2017 or stick with the 2018? Thoughts??